You could always cut a section of innertube like what's used to hold backup lights, just a little longer and pull it over the clasp of the buckle. Perhaps your diving is different then mine, but with the buckle in the right direction I don't see an entanglement concern.
Plug, I don't have QRs on my harness, but if I were to use them I would say start with them 6" apart. I would imagine you'd want them far enough apart to let you out easier but not far enough that it would cause your rig to come off if they accidently unclipped. I would start with just one and see if that works before trying two.
Plug, I don't have QRs on my harness, but if I were to use them I would say start with them 6" apart. I would imagine you'd want them far enough apart to let you out easier but not far enough that it would cause your rig to come off if they accidently unclipped. I would start with just one and see if that works before trying two.