You should also take note that it is better to underfeed than overfeed. An overweight snake is not a good thing!
As far as powerfeeding is concerned (if we're on the same page here) I think it is probably a bad idea. My Boa was neglected by her previous owner so she's pretty underweight right now. I asked someone at the pet store
where I get my mice if I should feed her a lot to *catch up* but he said no. It seems like just getting them on a regular eating schedule is the healthiest thing to do. Sort of like humans! No binging or crash diets lol