1. my soon to be new boat has a factory installed engine bracket. other than giving me more room in the cockpit with a closed transom, and the extra difficulty in docking, does the bracket provide any other advantages?<br /><br />2. engine on this new boat is a 2002 yamaha f225. i looked at the prop (black ss) and found a 17M marking. dealer said the prop size was 15 1/4 x 17. does this sound right? if it get this combo up to 6000 rpms (i think that's what i want) pushing approx 5300#, are indications that the engine is running normal?