well poles you jump on doesnt exactly equal that you will jump high. We had a guy here a few years ago that would jump 16 or 16' 6" on 5.10 length poles. thier flexes were 13.4 to 16.3 respectively. but we also had a guy that could jump on a 16 foot pole but his pr in practice was a 13'6" bar. but my five left run recently i cleared a 5.20 bar on a 15' 195 pole, weighin around 185 to 190. from six lefts, i left up a 5.35 bar,also nearly leaving up a 5.40 bar, grippin 15' 3" on a cut 16' 16.3 (stiff 190) but i have no problem jumping on 5 meter poles from that run, but have yet to pick up the timing. but from 8 lefts, i will jump on a 5 meter 15.0 at meets, with my current meet pr at 5.40. and i know that brian's pr's are the same, bet he jumped on a cut 16 footer from five lefts. The moral of the story, in my perspective and limited experience, is that how efficient you can be with a pole (how much energy is wasted on horizontal loss and not given to the vaulter vertically), depicts on how high you can possibly jump.