When you say needing huge muscles, I assume
you're talking about getting tons of weather helm? Yes? In what conditions? The Doyle settings don't tend to produce boat loads of helm, although they do work hard to power up the lower two thirds of the main. If your main
is really something of a bag, that may not be
ideal.

A couple of things to look at. How's the helm in five knots, ten knots, and fifteen knots? Do you work the jib cars back when the breeze comes up if you keep the number one going? If you cary the one up above fifteen knots, it starts to pay to let the top twist open a little and dump some pressure.

I assume that you're careful not to carry the boom above centerline. In almost all conditions, that's slow. and a great way to induce big biceps in the driver as the wind builds. Also, be careful, as the breeze builds, to start thinking about when to put backstay on. You don't need a lot, but at some point, you need some. This has two desirable effects. It flattens out the main, which depowers it a bit, and lowers helm pressure. It also tightens up the headstay a bit, which flattens the jib entry, allows you to point a touch higher, and should make it easier to feather up if you're getting overpowered.
A couple of things to really watch for, when you get enough breeze to be working hard. The boat *hates* to be stalled. It needs to keep moving, even if you have to scallop up, pinch for a moment, then put the nose down and accelerate. The keel's a bit on the small side, not terribly inclined towards generating lift, and needs good flow over it to keep the boat from going sideways. In general, this
also means, don't let the boat get blown on it's ear, even if it means dumping traveller.
Also, don't forget to keep an eye on outhaul, and cunngingham as it starts to blow.

As far as losing point, well, if you start shortening the headstay, you'll lose some point. I also expect you'll also start to generate lee helm in light air, and neutural helm in light to moderate air. I find those much harder to cope with than too much power, but your milage may vary. Whenever the headstay's too short, I find I tend to fall out of the groove to leeward, a sign of not getting enough weather helm. I'd rather keep the headstay long, put on backstay when I need it, flatten the main when I need it, and keep the boat lively in lighter air.

- David