While I can see the benefit of a zip-off reefing main in winds over 35 knots, I think you’d rarely need one if you had the small main and furling jib as you could always use the main alone and (if not already sailing) ease the shroud tension to allow the mast tip to go forward and allow you to tack more easily.
All your videos show you lying on the tramp bracing your feet on the opposite side of the cockpit which means you’re only getting 1/4 of the righting moment you could get by getting your weight out further. Take a look at pics and videos of other Weta sailors such as this one – https://www.youtube.com/watch?feature=player_embedded&v=A46CPWFXXeY.
I think you’d find you can get more out of your Weta than you think by learning to hike out from the outer frame of the tramp (it helps to put foam padding underneath) and when you’ve mastered this, by sitting on the Ama using the harness. Apart from anything else you get much less spray in the face!
