I at first would do the whole take out of tub and put them in another tub (and still do with the normal bp's.). But, with my anacondas and retic I feed them in there tub. When I'm not going to feed them I use my snake hook and rub there side and head. Then I can pick them up and take them out.
I suppose I could just leave my bp's in there tub to feed? I guess I just take them out to feed in another tub. Because, they are small now and even when adult's they'll be easy to handle either way.