More thoughts...
Rich: I find that Hunters with shoal keels are pretty fast down wind. We seem to make most of our gains on the "downhill" part of the course (1989 33.5 with 150% and pole). If your club has a non spin class, you should be competitive with your equipment. Bob's ideas are great, here are a couple more thoughts, if these are too basic, no insult intended. I find that when I am having trouble, going back to fundamentals usually helps. 1. You mentioned a topping lift, but did not mention a down haul for the pole. In heavy air when the pole rises, valuable air is spilled from the Genoa. I often use the slack genoa sheet around a bow cleat to keep the pole and the clew at the proper level. (Forgetting to release this makes trimming or jibing the genoa difficult as I found out last weekend.)2. Concerning the main.. The same principle applies. It is important to keep the boom and the clew of the main low so as to keep as much sail exposed to the wind as possible. If a preventor does not, use the vang. I have forgotten to release a preventor and attempted to jibe the main. It really screws things up for a while. (There is a pattern here, and for this reason, I don't like preventors.) Another concern is that in broaching situations, releasing the vang to spill air from the main is a primary safety valve. If a preventer is used to pull the boom down to its proper level, then you must be able to release it quickly in case you become overpowered. 3. Other Stuff: Check main halyard to make sure it hasn't silpped on upwind leg; release cunningham; ease outhaul to give fuller shape; release backstay tensioner; station someone facing aft to look for puffs; be sensitive to silght changes in wind direction and trim accordingly; work to maintiain clear air and to blanket those downwind; if you don't have a folding/feathering prop, drag may affect speed more in lower apparent wind situations; keeping the rudder still is also important - it is harder to regain momentium in light air situations; etc.It is also harder to maintain focus going downwind because you don't get the same quick feedback that you get when beating to windward: there are no sails luffing, tell tales wavering, etc. But, downwind, trim and strategy are probably more important. Your boat and equipment should be relatively fast so look for little things to improve. Good Luck! Ron