The spray is coming over the transom. Its from the motor. Its definitely too low. My Evinrude dealer where I live does not have much experience with sibs or ribs. I read on a thread here somewhere that the anti cav plate should at one inch below the keel.
My zodiac is a 2010 model year, but its new off the shelf from Defender Marine of CT. And I have a five year warranty from date of purchase, which was about a month ago.
I find it frustrating that Zodiac doesnt specifically say where the anti cav plate should be. Because this boat has three distinct levels, the keel, the speed tubes, and the main tubes.
If i can get the speed up to mid 30's I'll be happy as a lark.
I really want to dial the performance of this boat in, I get a lot of compliments on her, and they are very uncommon around my parts. Well I think in the USA in general. I think with my 50 etec I should easily get mid 30s. So its a matter of dialing in the prop, and the cav plate to the right parameters.