So, in the pouring rain today I was rotating the kite slowly in the middle of the wind window about a kites width above the ground, and I mean... slowly!

Flying Rev 1.5B vented, standard spars. My concern is arm span and the angle of the kite to the wind. I have to move back briskly when the kite was face up which gives an indication of the actual wind speed. Face down is less of an issue as we are aware and I was probably moving forwards at that point to compensate. The transition from left arm forward to right arm forward was continuous throughout the rotations. A 'slow march'.

If I can use an alternating full arm stretch with a Rev 1.5 would it actually be possible to utilise a Rev 1 'fully' in these conditions?

This is probably a rhetorical question!