In reply to drsdave:
the "marmite" of climbing protection,
I use them , none of my mates will, they, like all pro need to be placed properly to work properly.
Can be placed easily one handed, will work where other rock pro will not, and I don't just mean "shot holes"
2 negative issues i found with them, first they can be "unseated" by moving sideways from placement, if rope goes tight, and second, none of my mates will use them so i end up with them all day, with comments like "if you place one of those things, I might just leave it on the route" helpful,,,very helpful...
Just lack of knowledge etc, stopping people from valuing them