My 9.9HP Johnson seems to have a tough time pushing my 17' Fisher, which I thought it would do pretty well. The prop is in pretty bad shape. No major dings or anything just some pretty rough edges from gravel and stuff. If I got a new prop with no problems, and possibly the correct size and pitch for the boat, would I see a MAJOR difference in pushing power??? Would like to know before I spend the cash. <br />Thanks for the time!!