Unless the blade has next to nothing as a chord cross-section profile reversing the blades doesn't do it. I've got a couple of kits which are in the 'stalled' build state at the moment which have that very problem, one is a Henschel Hs P87, an interesting pusher canard aircraft. Only thing is, Planet must have used a wide blade tractor prop to copy and stuck it on the rear end, but the props are facing backwards ---
Same with the Tradewind I have, the front prop of the contra-prop has the blade chord the right way around, the rear prop blades though are facing backwards ----
Mind you I did managed to re-twist an Aeroclub white metal Sea Fury prop to an opposite hand one, the blade chord cross-section was about non-existent