I've been looking at installing trim tabs on my boat. It porpoises a bit until I get up above 35 kts. I've been looking at the Bennett bolt tabs in 12x12 as with my twin engine it doesn't leave much room. I may not be able to fit a 12" wide tab and keep the manufacturers recommended 8" from centerline of engines. Would the 9x9's be adequate? My bottom already extends out 5" from my transom. I believe that is why it flattens out at higher speeds. I'm looking to get the bow down more for ride and porpoising. Any insight would be great. I feel like I may be able to get away with the 9x9 tabs due to the bottom already being extended back which will continue to help at higher speeds. Thoughts?