3am sucks on nightshifts its so slow!
Tomthekraut, your answer to dudes question aint really helpful is it? the word yes.... don't explain much, and leaves a load to be desired...
Stag. lets give you some right info on this topic..
Using 2 channels can be used to control two motors with the use of micro switches that control the 2 esc's (one for each motor) attached to a servo.
this is commonly know as skid steering or tank steering so no rudders are needed.
The down side it that it is quite complicated electrically to setup, and using only 2 channels how are you going to control the hopper to drop your bait?
Here's a better suggestion which can do the job better and be less complicated.
Take 2 motors each should have there own esc' probably around the 15A mark (motor size pending) now you need a minimum of 4 channel radio for this set-up im sure you can pick one up pretty cheap where you are the 2.4ghx are pretty good value.
Okie attach the port esc to one stick on your TX through the RX channel (normally be forward and back on a 2 channel) then the starboard esc to the other channel ( which would have been the left and right stick , but in this case its also have forward and reverse)
Plug your batteries into each esc to power that motor or link then power up using a 6v cell or something, remove the BEC from ONE of the esc so not to over power the rx and blow it up!
To go forwards push both stick forward, to go back pull both sticks back, to go left or right one stick forward and one stick back.
Hopefully if you chose this method you have a 2 spare channels in which one of the left/right functions can be used to control the bait hopper servo to drop your load and close the hatch again.
This should get ya started