Dipsy...I know the glider flyers use them quite a bit....probably a good topic for "Ollie" seeing he likes those gliders......I know the Ziroli P-61 Black Widow..has spoilers as the scale version has them...they work fine on the P-61........the full scale (Northrop) plane was originally built with spoilers only, then small ailerons were added to give "feedback" to the flt crews so they would have a "feel" of resistance as roll inputs increased.....The model flys very well and does nice rolls as well....should work out fine ...give them a try....Bill.....