Best way I've found in developing your own tuning "recipe" for your particular boat and sailing style is to sail and hang out with other folks. I've learned a few things on trim/tune/tactics from sailors in other fleets that can be applied (or modified) to the boat I happen to be on. The downwind trapping thing was new to me but showed serious speed on the 18s at T-winds. Had I not been there to see it, I wouldn't have been able to wrap my pea-brain around how that could be faster than driving deep downwind (VMG in living color)

I guess the other really good way would be to boat-whore. Looking at the folks who get nose-bleeds from standing so high on the podium you'll invariably find they sail a wide variety of boats, formats and venues. I would venture a shot of good rum that they developed their intuition on years and kilometers of hands-on time practicing, winning, losing, and working.

There is no magic number you can dial your boat to, so asking for settings is like asking for the best chocolate chip cookie recipe. What is your objective? Make the boat easier to handle (sometimes at the risk of going slower),faster (and oftentimes narrowing the performance "groove"), punch the chop better, etc.?

On a personal level, you've got the basics already in hand. The boat's tuned generally and now it's up to you and your "stick time". Worrying about your diamond wire tension (650# vs. 675#?) is less important than keeping the boat trimmed properly (pointy side up), making smooth transitions (tack/gybe, spin set/douse) and finding the best wind lane for your intended direction