If there's enough wind I'm always on the wire going upwind; trips me out to sit on the tramp now, unless I've forgotten my harness. (See the pic in my sig.) I fell off the first few times I tried it (with crew aboard) but it hasn't happened in many months now. Knock on wood.

I usually hold the mainsheet in my (foreward) hand and keep the jib sheet lying across my feet just in case.