KE spins are tough with some planes, the UCD makes them really easy, some of the smaller fun flys are tougher.

First, mixing down aileron with down elevator or just using flaps makes it much easier.


Up high, do a half a stall turn and when the plane is horizontal release the rudder and throw in full down. From there it gets tougher, you need to fly the ailerons to keep the wing vertical and feed in rudder and throttle to slow the descent and increase the rate of spin.

Too much rudder too soon and it pops out of KE, same for throttle. The hardest part is flying the ailerons to keep the wing vertical.

That's just one way but it works with practice.