theres no replacement for displacement... get a bigger ski if you can...... stainless steel wont do anything different than whatever you think you have now.... getting it setback or different pitch's will affect the ski,,, but you dont wanna just throw on a new prop, pitch to low and you hit the rev limiter, pitch to high and it'll be a dog out of the hole and have the potential for detonation....I recently acquired a 700 size jetski, I plan on doing water skiing, wake boarding and tubing. Is this a big enough boat for that or should I try to find an 1100??? The people before seem to have pulled people fine on the ski fine, just wondering. Or another question is maybe upgrade the impeller to stainless steel? Would that work?