Originally Posted by multihullsailor6
When going downwind or broad reaching make sure the leeward sheet, which on this point of sail is normally unloaded, is secured as short as possible in the cleat to act as an anti-gybe stopper.
That may be accurate on some boats, but not others. Depends on how far outboard
the sheets are anchored and whether there's an alternate, outboard anchor
point specifically for use as a preventer function.
tugz - what model boat are you chartering?
In general, you can place the boom where ever you want it, so visualize where you want the boom as if you had a traveler and maneuver it there using the two sheets. Then work the sheets to get the leech tension/twist in the mainsail
for the conditions.
An additional capability not as easily used with a traveler system is using the topping lift
as a third anchor
point in light conditions to hold the boom steady against the sheets to keep the boom from pumping up and down with the variations in wind
speed and movement of the boat in the chop/swell. You can lock the boom in place using the sheets and topping lift
to maintain the sail shape you want. This takes the weight of the boom out of the mix.
Dual main sheets is a fabulous setup for wide beam multis. I'm amazed more cruising cat designers don't employ it. Using travelers is sooooo monohull