Right now I've got a combination tack & halyard line. I want to swap it over to seperate lines. If I mount a spinlock under the tramp for the tack line, I can run a piece of line from the top of the spinlock, through a hole or grommet in the tramp, and then dead end it in the tramp. If I mount the halyard cleat on the mast, then route the halyard down through the loop to release the tack, I'll be able to release it all at once just by pulling the spin halyard from behind that loop. Really your sheets shouldn't be long enough to be able to run them over anyway.

If you are moving at one boat length per second with the kite up, that extra second you have to stop snuffing to release the tack, is potentially costing you positions.

I dump the main traveler all the way with about the same amount of mainsheet tension I use downwind, and I'm going almost dead downwind when approaching the gate. I can't do it all the time, but if things are going well I'm pulling the last bit of the spinnaker in while the boat is rounding up on its own around the gate. Then I just pull the traveler line to get myself back into upwind mode and adjust downhaul, rotation, etc. once moving back towards the weather mark.