Sailing downwind with a wing mast

I am still not sure how to work the traveller and main sheet. Is it in general correct to place the traveller in the middle to support the mast except on very, very low winds (< 8 kts or so)? I use to keep the main sheet pretty tight and leave it cleated - but I saw recently a video with Darren Bundock on the helm of a Tiger, working heavily the main sheet. I wonder what he is doing there and if this applies to the Capricorn as well ...

Thanks,
Kai

The mainsheet supports the mast and should be fairly tight. You can fine tune according to the tell tales. You may drop the traveler if needed to sail a higher course. In very light air, you may try dropping the traveler a few inches. See the tuning guide on the AHPC website.

I am fairly sure I have heard Darren Bundock say something along the lines of
"The Tiger has a pear shaped mast which means we are able to play the mainsheet a little more down wind"

The capricorn masts are very strong, but not as strong as the Tiger: Definitely make sure mast rotation is out to 90 degrees! Don't "dump" the mainsheet under any conditions - The AHPC tuning conditions suggest a centered traveler in most situations (except very light air).

Since the 'big three' (Infusion, Capricorn, and I think the Wildcat, too) all have wing masts: where is the advantage over the standard-shaped masts?

It
1)when rotated the mast itself adds depth to the chord to the mainsail main up near the luff,
2)on the minor axis, wing mast adds flexibility on the top of the mast, allowing the top of the main to twist off considerably when the mast is fully rotated, but adding fullness at the luff (the mast itself!), when adjusting in the mainsheet. More tuning potential.
3) Removing mast minor axis rot., mast is stiffer, and while sheeting in, removes top main 'twist off', decreasing wind surface area of both mast and sail (depower or light air). With the mast at more neutral rotation, luff and downhaul spreads curve over entire mast, which radically flattens the mainsail for depowering/light air. (I still can't figure it all out!)