Kevin, what is the nature of your "struggle"? Just wondering if you are having trouble riding out landings, landing right side up, or what. Since you have already tried a range of sizes, were you as comfortable on the longer skis? I'm talking about skiing on the water, jumping wakes, cutting around etc. If so, I would consider getting the longer ski. Which ever way you go, time on the water is key. You must feel supremely confident on your approach to the ramp.