Hi Chris,
After just finishing my “Aziz”, I can tell you that I fitted my first Bow Thruster and it was given power though a ESC ,Mtroniks 15amp the same as the two independant motors on the boat, it was wired through to the 4th Channel on the receiver to give left and right movement on the left stick to match the left right movement on the right stick for the rudder . It all went together quite easily and I’m no expert,I just ask a lot of questions at the club I’m a member of at Etheow Model Boat Club !.
You do need at least a 4 ch receiver though ,Is there any advantage buying anything less these days though ,when this boat is finished you will most probably be doing another anyway ,perhaps you should splash out and get one of the new 2.4Gig trannies hey.
Ducky