I'm not sure how much pointing you'll get, but in really light stuff you probably want to make sure the windward float is out of the water. I don't think there's much use beyond that, as you'll only be sinking the leeward float and increasing drag. The stern on the main hull is a little abrupt, so keeping weight forward in light to medium keeps the water flowing smooth there (if the boat you're on has the "swim step extension" this helps, although like everything the debate is how much). Most comments say that in most conditions if you're in the **** you're slow.

The main hull on Farrier tris are relatively flat on the bottom, this to initiate planing of the main hull. There is rocker aft that is intended to help pull the bows up under speed (when it's honkin' downwind get weight aft to help that rocker do its job). There's a speed jump when you get the main hull planing, so part of your goal in marginal conditions is to get there, keep the boat light and hot. The floats are not real high bouyancy, so there's not much point to flying the main hull much above planing (looks like fun in a Seacart, lots of spray and time to reef on a F-27) - you'll dig in and catch the beams.

To get you pumped - here's video of an early F-27 romping in SF:

F-27 Vid