I stand corrected. I guess my memory did not serve me well. We were at the unlimiteds in Evansville and I thought we had seen the rudder on the left side. Despite that fact our sport boats 21 and 45 with the rudder on the right went through the turns much better. Less likely to hook with a tight on the bouys turn. No difference in the speed, except faster in the turns.
The other contributing factor is of course the turn fin design and set up of the boat. Years ago we tried rudders on the left side on our hydros and they just did not work as well as on the right. I think Gene Taylor pushed the idea for a while.Again it may have been someone else who popularized the concept. It did not work well and the present placement of the rudder on hydros, mono's speaks for itself!!!!!!
The real question is: Are the sport and scale hulls SO different that a left mounted rudder is mandated? I guess since we had not ran sport hydros much and Mark tried the standard left side mounting of the rudder. The boat would hook and do a flat spin in the turns. I decided to place the rudder on the right side since I did not see why it would not work. It was marked improvemet. Doc