This piece of addvice has been sent in by a Forum Member
Make sure that everything on the inside of the Hull does NOT move or slide.
"If this happens at high speed the results can be disastrous."
In a lot of boats that have 2 props we add an extra feature:
From the moment that you make a turn, the prop in the inner corner is switched off, this leaves the outer prop to rotate only.
this can be achieved in several ways:
1. micro switched mounded near the rudder servo that switched the inner motor off
2. two speed controllers with a V mixer
3. A P94 from Action, this is one Unit that has two speed controller and a V mixer on one Circuit board