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Hello Fire Dragon and a question, how far above the keel center-line is your outboards cavitation plate?

If your motor sits low on the transom then the Aluminum prop will suffice but, if mounted all up or where your cavitation plate sits anywhere from 1 to 1-1/4 and even 1- 3/8 of an inch above the keel then a stainless prop should be considered.

The Dauntless 15 from my own experience is extremely senitive too to much positive trim. Trim tabs if hydraulic or electric may not be as efficient as you may think. Due to the length of the hull and its narrow beam along with ever changing water conditions properly adjusting the tabs to avoid porpoising may be more frustating than practical. I have Bennett hydraulic tabs on my Dauntless 15 and have adjusted them very very few times. The hull reacts to quickly to the tab input which could make for an "interesting" boat ride.

I have been testing a few different pre-set positions with my tabs for the sole purpose of generating a bit longer running surface when getting on plane but without affecting the ride attitude of the bow. Also I have changed to a different stainless prop modeled after Yamaha's "semi-cleaver" style which is suppose to offer improved stern lift capabilities. Its manufactured by Power Tech it a 13" Dia. x 17" pitch but I am still in the testing phase with the prop.

Hope the bit of info can be useful to you...happy boating
Angel M.