you're recommending your billy goat when you yourself are getting another board as a pow board? that's inspiring!
Anyways, I'd say try a different board as it sounds the slack wasn't absolutely perfect for you. Maybe a board with just nose rocker would address your 'too-loose' tail?
Check out the Capita Charlie Slasher/Burton Barracuda or for a cambered pow board, the burton juice wagon or cheetah are options too.
Boards like the fish and hovercraft have little tail which some people don't like (like me!).
I'm surprised too that the gyrator is gone!
It's a sick pow board, I'm just a board whore and need a swallow tail. If I was to keep it for pow there would be nothing wrong with it.