Build speed speed speed, Pull the traveler in, keep the main tight. Start the turn keeping your speed up, as the boom passes over your head give a quick flick in the other direction to slow down the boom impact and leaving the two hulls to take the hit, then head up releasing the traveler as you go along.

What you want to avoid is releasing everything traveler and main and having the main violently sweep over your head.

Scary maneuver on a H14. They don't have a lot of buoyancy up front.

But the best way is still to tack. You can tack a H14 in high wind, you just have to watch where you sit very carefully. You start at the back of corner of the trampoline. Build some speed then head up, sheeting in as you do so. Once the sail loose its power release the main sheet, quite a lot of it and use your built up speed to finish the turn. Don't move your butt yet: your weight is the anchor point for the turn and the other hull should be almost out of the water at this point. Wait, wait, wait until the boat is firmly on the new tack. You then jump quickly to the opposite front corner of the trampoline (toward the front) to flatten the hull down and block the boat on its new heading. Sheet in sloooowly to avoid going back into iron. Done.

H14 are so fun.