Positive Ion Control
This feature is based on the principle that applying a low voltage positive 
electrical field into the water where you’re fishing will attract fish and 
increase your chances to catch more fish. Since fish are attracted by a slight 
positive charge and repelled by a strong positive or negative charge, generating 
and controlling the correct charge can be critical to the success of your 
fishing. With Cannon’s® exclusive Positive Ion Control you can change the 
natural negative field created by the grounded electrical system of your boat to 
a positive field. More information on how fish respond to electricity can be 
found in “The Secrets of Fishing with Electricity” by Ollie Rode.
Short-Stop 
Automatically stops the weight at the water’s surface, preventing the lift 
motor from raising it into the pulley at the end of the boom.  When the 
downrigger cable is in the water, a small electrical current flows between the 
cable and grounded metal boat components in the water.  When the cable clears 
the water, the current flow stops.  The Short-Stop system senses this 
interruption and turns off the motor.  The trolling weight insulator is used to 
break the cable contact to the water while the weight is still in the water.  
Stopping the weight at water level eliminates the cable strain caused by a 
bouncing weight or a weight hitting the boom end, and it also keeps the weight 
from swinging into the boat hull.  This feature requires the boat to be properly 
grounded.
Stainless Steel Spool 
For our tournament-fishing friends, we offer a stainless steel spool, capable 
of supporting either monofilament or any of the popular “super lines.” The only 
stainless steel spool in the industry, it eliminates the noise vibration and 
harmonics created when trolling with a steel cable.  When the money is at stake, 
you’ll get silent trolling and proven Cannon performance.
Digi-Troll™ 
Advanced electronic control panel provides: 
  - Cycle function automatically jigs the weight up and down at a set depth / 
  time interval 
- Memory storage of five different depths 
- Programmable descent / retrieval rates of 110, 150 or 250 feet per minute
  
- Bottom tracking mode that keeps weight at a set distance off the bottom 
  (with purchase of optional transducer) 
- Three-digit digital depth counter 
- Network capability to use one transducer for bottom tracking on multiple 
  Digi-Troll™ IV HS’s (with purchase of optional relay cables) 
- Auto-up function, stops weight at water line
Advanced technologies enhance our hard working downriggers to outfit you with 
the advantages you need to catch more fish. We understand the fisherman’s 
passion, and we’ve built it into every Cannon downrigger on the water. 
FAQ
What is a Clutch-Brake? 
A clutch-brake on a downrigger is essential. On a manual downrigger it allows 
the user to control the descent of the weight without cranking. Turn the crank 
handle or clutch knob slightly backward for a slow descent. Turn it further to 
increase the rate. Stop the weight by simply turning the handle forward again. 
Should the weight ever get hung up, the clutch system will slip and prevent the 
breakage of the unit. 
What is Short Stop? 
Short Stop is a Cannon exclusive feature that automatically stops the weight 
at the water’s surface, preventing the lift motor from raising it into the 
pulley at the end of the boom. When the downrigger cable is in the water, a 
small electrical current flows between the cable and grounded metal boat 
components in the water. When the cable clears the water, the current flow 
stops. The short stop system senses this interruption and turns off the motor. 
The trolling weight insulator is used to break the cable contact to the water 
while the weight is still in the water. Stopping the weight at water level 
eliminates the cable strain caused by a bouncing weight or a weight hitting the 
boom end and it also keeps the weight from swinging into the boat hull. This 
feature comes on all Cannon electric downriggers and requires the boat to be 
properly grounded.
What is Positive Ion Control (PIC)? 
This feature is based on the principle that applying a low voltage positive 
electrical field into the water where you’re fishing will attract fish and 
increase your chances to catch more fish. Since fish are attracted by a slight 
positive charge and repelled by a strong positive or negative charge, generating 
and controlling the correct charge can be critical to the success of your 
fishing. 
With Cannon’s exclusive Positive Ion Control you can change the natural 
negative field created by the grounded electrical system of your boat to a 
positive field. More information on how fish respond to electricity can be found 
in The Secrets of Fishing with Electricity by Ollie Rode. 
What is blowback?  
Simply stated, blowback is what happens to the downrigger weight when you 
pull it through the water behind your boat. As your speed increases, so does the 
horizontal distance between the weight and your downrigger. The faster you go, 
the farther the weight is behind you. The farther the weight is behind you, the 
shallower the weight is. 
For example, if you are trolling @ 4 MPH with an 8 pound weight and you have 
100’ of cable in the water; the downrigger ball is actually at a depth of 80’.
What is the main advantage to using an electric downrigger?  
The main advantage to running an electric downrigger is when it’s time to 
bring the weight to the surface. Simply toggle the up switch and walk away – 
Cannon’s exclusive short stop will automatically stop the lift motor when the 
weight hits the surface of the water. With manual downriggers, you manually 
raise the weight by turning a crank handle. Deep water fishing is when you will 
really appreciate an electric downrigger.  
Why would I need a stainless steel spool? 
Many saltwater anglers want to run monofilament or superline instead of 
cable. Plastic spools can break when spooled with these types of line, so all of 
Cannon’s Tournament Series downriggers come with a stainless steel spool.
What are the advantages to having a downrigger spooled with monofilament? 
First, cable tends to act like a long guitar string when it’s pulled through 
the water, creating an audible hum that can spook fish. Mono runs silent when 
pulled through the water. Second, kingfish anglers like the ability to quickly 
cut their downrigger line if a fish makes a run toward it, to prevent them from 
losing it. It is much quicker and easier to cut mono than it is to cut braided 
stainless steel cable.
Will short stop and positive ion control function if I re-spool my Cannon 
downrigger with monofilament or braided line?  
No, both of these features rely on the stainless steel cable to conduct an 
electrical current into water. Since monofilament and superlines will not 
conduct an electrical current, these features will not function when the 
downrigger is re-spooled with them.