I have a little 13ft fiberglass jon boat micro skiff ive put together with a 76 mercury 9.8 outboard. made a homemade jackplate to move the motor up and down to test out heights. No matter what height I run it makes a V spray behind me. Ive tried cavitation plate even with keel, 2"above and 1" above. Pics are of 1" above but it does the same no matter. Really dont want to lower cativation plate below the keel. What would be causing this weird spray? Is it because I do not trim up the motor and let it rest on the jackplate? Because if I do trim it to the first hole, it seems to loose performance and nose up too much. and still makes this spray. Right now it has the 2 blade prop. Im buying a new 9x9 3 blade and going to run that here in the next week or so.