if it's taking you 2 minutes to tack in 15 mph winds, maybe you should just plan on a backtack.
on a h14 it's normal proceedure in big waves and wind.
just get head to wind and reverse the rudders w/ the sails backwinded. once you are backing up it only takes a second for the bows to swing around then you are of once sheeted in on the new tack.
just getting head to wind can be a problem if it's really rough, so there is no shame in a planned backtack.