[Faster]

Adding some "rollers" on the shrouds will help a lot, and holding the sheet a bit longer to "back" the sail before release will speed things up (and help complete the turn) but timing takes practice.

As for the rollers, there are turnbuckle covers available that may help somewhat, but buying a few feet of lightweight plastic pipe and slipping them over your shrouds will be cheaper and more effective. Choose white or black as you prefer, and use a solvent to get the printed specs off the pipe.. it'll look fine. I find black is less visible. This idea also works well on babystays that can often interfere with a smooth tack. ABS or PVC will do the trick, or check out the thinner walled pipe used for built-in vacuum systems.