With regard to the spinnaker sheet arrangement, I have a block at the back of the trampoline that the spin sheet runs through. This helps take up the extra slack and puts the sheet within reach of the skipper so he can start a little presheeting as the crew is hoisting the kite (at least enough to hand the sheet to the crew just after the hoist). This block is attached by a 1/8" bunji that goes through a grommet at the rear of the trampoline and forward (under the trampoline) to the front x-bar. The bunji allows the block to move as additional spin sheet is needed or jammed on the lazy side.