Hi Geoff,
We disarm the floats after reaching Vy during after T.O checks, and arm them again at 90kts decellerating to the deck. I think due to the fact we had 2 inadvertent float deployments (on the ground) when we first got the aircraft! I'm sure you already know about that.
Maybe see you in August when I am due to be out in the sim.
Rgds