I thought about doing this type of setup. Doesn't seem like it would be that hard but I haven't really looked into it yet so......I don't know if its possible but some larger machines have a lever on the dash and a foot pedal. The dash control could be used all the time or you could set that and when you release the pedal that's as low as the rpms would go. If you could set it up like that I think it would work pretty good but if you can't do that I would agree with jeff