any input: 2.5 & 4hp yamaha 4 stroke for dingy motor. thinking the 4hp could be used as a back up for TONKA (cd.22) i know the 4hp is ninimal . measurments: anchor well bulkhead width at the top, & from the top edge to the underside of the deck. I want to bolt on a light ply panel as a water deflector for the anchor rode. 2nd measurment: height of the moulded in step in the cockpit. from the floor to the top of the step. TONKA is a 2002. any problems with the small yamahas thanks B&R :?: :?: