SUP: don't for general all-around windsurfing.
It's OK in waves in light wind, or teaching or social sailing. Actually fun.
But performance/planing: not really. Longboard freestyle: marginally (but fun though).
That's my take.
i got my sup for that, waves that wouldnt be much good for surfing, i think it works great for that. even if its really small, i just go out play around, good work out and fun. ive got the starboard 11 2, theres probably better ones for waves, and probably better ones for flat, but all around this one works well for me.
im sure itd be better than your old flatter windsurfer.
