HI AndyG009 The steep angle was to get the diesel motors into the boat. On my Precedent Huntsman I decreased the drive line angle both at the prop and motor ends. The 35mm brushless motor was less diameter than the flywheel of the IC motor. I can still fit a 45mm prop with 5mm clearance, but, using a 40mm 2 blade. I quick test on Saturday and the boat has no problems with prop torque at full speed. I made a little larger rudder, mainly a bit deeper. Rudder control is very good.