EXCEPT just above the boom in the center, there appeared to be a loose pocket. I reefed her down tight and this sloppy pocket remained. Is this normal or how to eliminate it?
The shelf above the boom is normal. The sail is not a flat piece of material. There are curves in the panel seams (broad seaming) and curves in the luff and foot that give the sail its 3D shape when it's bent on to straight spars (mast and boom). The sail wouldn't work properly if it didn't have this 3D shape. It's not necessary to crank things down tight in an attempt to remove wrinkles - in fact, you can ruin the shape and prematurely age the sail by over-doing that.