I think its great with spin, but at my club we only do triangles so i cant use it. I travel around so that i can use it at different regattas and i love it,
We have the
"Nationals" without spin
"State Titles" without spin
"Spin States" With spin
Any other regatta .....SPIN eg, cat champs and sauna sail
but at club no spin as we have 6 mossies without spin consistently sailing who keeps you on your toes anyway
So in the end i do two types of downwind and get alot better and quicker in the handling doing both

Matt