I always use a reel/smb, so I am not too worried about getting back to the surface. I just want to make a long surface wait with no buoyancy that much easier, e.g. in a heavy sea. I can always try to use the dsmb for buoyancy at the surface, but that's not very practical and somewhat defeats the signalling purpose of the SMB. maybe I will just buy myself an inflatabe tube (you know the ones with the rubber duck at the front), shove that in my BP and use it as my emergency surface float!
