Thanks for the help guys. I have a mechanic who is a Supra Master tech and Im going to have him check it out. I agree with the thinking that when the water is chopped up from pulling a tube it probably disrupts smooth water dispersion through the prop but that doesnt explain why it only does it turning to the right and not left so maybe it is the rudder? BTW - dumb question but what is "prop cavitation?"

Thanks again for the feedback!

C