I make a smooth easy transition into an upright flat spin on AFPD (simulator) and at the field, starting with the plane climbing at 45 to 60 deg at half throttle, apply full left rudder and full up elevator, then as much right aileron as it will take without rolling out. Add more throttle if needed. The plane will go into an upright spin without ever having the nose drop below level.
For an inverted spin I climb inverted , 45 deg, half throttle or so, apply right rudder , down elevator, feed in right aileron (too much will roll it out) add throttle as desired(too much will roll out).
I do this about every time I fly. My Burrito and Mojo 60 will rise slowly in a spin if I add the right amount of power. I fly both planes with the cg aft far enough to fly hands off inverted but they will spin with the cg farther fwd than that.