PeterHopper: The shot I use is a punched 80W - punch gives you 68. Reduce a little if wind is behind you.
Thanks, had a chance last nite with that shot - 100% CG wedge 68yd punch worked dandy - I did NOT bury the spin dot; just hovered it over surface.
BTW u can get some backspin from sand with CG wedges - just dont' bury the spin dot. I put the dot-bottom just slightly into sand surface with full shot and can get backspin - but not from >25% sand.