Paddy, you ARE allowed to shoot pollythedog's competition at 6 yards, but you must use the 6 yard (reduced scale) target. I'm starting to use that one. My pistol / I seem to shoot better at 6 yards than at 10 meters, and as there are 4 bullseyes on that target, you can do the whole shoot using a single target.
I don't have a springer pistol - mine is a variant of the HW 40, and is really a single stroke pneumatic - but I think more competitions are always good: even if I don't have the time to compete. Right now, I'm doing just Polly's, but that's over in May.
Polly's allows, if I recall, any pistol that requires manual charging for each shot: NO PCP's or CO2's, in other words.
Cheers!
Jim