Hmm, lucky coincidence that the daggerboard/foils from DZ was close to the same size as the AC72 required! But sure that must count as new board? Even if the tip is from the board they broke, that must be alot less then 50% of the total board? Even more so if they are gonna change the tips
Good idea though about changing tips!
Did we actually see any pics or video of them foiling on the port(original) board? Maybe they dont think its strong enough.
When I saw the video of the bow flexing/fluttering up and down when foiling, it kinda made me think the lee hull takes up all the "bumps in the road", so the rig stays more stable. I just watched the highlights from AC33, and it looks a bit like the same thing with DZ vs Cheesezilla, CZ was hobbyhorsing a lot more, atleast the rig was. Perhaps that is a plus with the twist?
I think it feels like the angle of attack of the foils should change alot if the whole lee hull is changing trim so much and fast? Then again, look at the wings of commercial jet airliner, they bend alot, and still retain flow I guess.. not the same thing, but still
Or perhaps its just like jhc said above, trimming the board create some feedback in the whole hull.