With the OEM trim ring installed on a Superjet, we unbolted the bracket that holds the trim angle stationary, and moved the nozzle to its fullest extent in all directions. With this setup the nozzle can be at full trim and full turning in either direction without hitting the nozzle on anything. We don't have a Thrust or Xmetal setup, so just send pics and let us know how it fits. We're always wanting to improve.
If no other responses come in, I'll give my honest opinion although I only ride Superjets currently. We recommend:
Zero -- Big surf (10-20+ft) and riding fast
+3 -- Smaller surf where I want the ski to be more playful and the nose a little less planted
+5 -- Small surf or river riding to make the SJ handle more like an aftermarket hull (you'll be surprised how true this is)
+8 -- When we're really bored or want to flip our SJ's on ~3ft surf, not the best for high speed but can be ridden at WOT
-2 -- I haven't tested this angle much on my own ski yet, but a friend with a Foot Rocket actually wanted his nose to come down, so he liked it. Also has some potential in racing I would think? I'm excited to ride this one next. Would be sweet for getting the ski on plane instantly.
We priced these so low to try to get people to buy multiples, that's the beauty of it. For $60 you can literally make your ski feel like a completely different hull. So much is determined by the nozzle.