Here's a novel idea. Why not have a gear unsafe light with one throttle closed and the horn with both closed. This would seem to cover things nicely. If I recall correctly some Pipers have this set up.
As for the horn sounding during a clean stall, really, how much stalling does an aircraft like this actually do compared with the total flight it does?. Not much in my experience. You're not teaching stalling at this stage of the training process, it's more an exercise in getting the student used to handling the aircraft. In most cases two clean stalls during the type intro and one during the type check out. A horn going in this situation isn't that much of an issue.
Last edited by 27/09; 9th Nov 2010 at 22:55.