Not a Malibu...but we replaced the stock 13.5x17 prop on 2000 Mastercraft X-30 with the OJ 1235 and the hole shot was more than cut in half and the RPMs went from 3600 to 3900. We run about 3300 lbs. plus people at 23-24 mph. That small hike in the RPM is totally worth it to me. Plus if you factor the extra time at full throttle to allow the boat to plane with the old prop, the engine probably likes running a little higher more consistantly with the new one than full out for so long with the old. Never had a chance to test any other props but with the high amount of weight we run, and considering we don't foot too often, I figured the 1235 was the best choice for me and I couldn't be happier with it. Got ours from Midwest Mastercraft at www.waterskis.com
if you were wondering.