Yes, you can use a downrigger to pull crab pots. A downrigger is a device that is used to lower and raise weights on a fishing line. It consists of a cable that runs through a pulley system and is attached to a weight. The weight is lowered into the water and when it reaches the desired depth, the crab pot is then pulled up using the downrigger.
Downriggers are typically used for trolling, which is a method of fishing where baited lines are drawn through the water behind a moving boat. However, they can also be used for stationary fishing as well. In this case, the downrigger would be used to lower and raise the crab pot rather than bait and line. This method can be very effective in areas where there are high concentrations of crabs such as near docks or piers.
If you decide to use a downrigger to pull crab pots, there are a few things you need to keep in mind. First, make sure that your downrigger is properly secured so that it does not come loose and sink to the bottom of the body of water you are fishing in. Second, pay attention to the depth gauge on your downrigger so that you know how deep your pot is and can avoid snagging it on underwater obstacles. And finally, always use caution when handling any type of weight or device around bodies of water as there is always risk for injury or drowning.