I have used it, but not with the stratospheric results here, especially with the new update this November. The max points you can get with bubble strat is 500 now. [/b] WAIT [/b] ...... NOW it's back to 1000?
I have two bubble poke which I use for 340.... no 680 .... prestige points and 68 EXP.
One is a level 1.5 Krabby 35 CP 10 HP at 28%. I didn't have a good match up for that but I found a Pidgy which I evolved to a Pidgeotto at CP 26 HP 18 level 1.5 40% with a wing attack will kill him with no potion use or revives. I set up the other five spots with throw away CP 10 pokes.
The other set up is an evolved poliwag to Poliwhirl level 1 CP 15 HP 12 at 15% and I kill it with a bell sprout CP 11 HP 10 vine whip at 40 %. It sounds hokey but it yields 680 points, no potions, no revives. I'm hesitant to power up Poliwhirl for fear of making him too strong.
I haven't had the luck to catch other low level possible attackers or good match ups, so this is how it is for now. I'm level 31.
I'd be interested to hear other peoples' experience.