Repeat of snakecharmer's info (and others). We left our adopted ball (2-3 month old) alone for the intital two weeks before feeding, handling etc. During that time he/she seemed to want to explore/escape more than hide, now that comfort and familiarity in his/her new environment has come, he/she likes to hide as normal, or curl up in a nice tight open space, with activity coming when hungry or thermo-regulating.
We handle ours about every other day, for 10-20 minutes. No out of hand exploration as they are not a dog for sure, and getting away is their main goal. It is more for my son to learn and me to inspect as well as get the snake used to handling (both for show and inspection). No touch the day of feeding, or two days after feeding.
As a side note, ours does not ball up these days at all when handled. He/she did when first adopted and held (for cage prep as provided cage from previous "owner" was a red lamp, some pine shavings and a small water dish), now however it is open the enclosure and into hand (sometimes he/she wants out) and moving around hand to hand with support. I should also note that the cage is in our family room which sees some activity. My belief is the snake acclimates to this as the norm and he/she is doing very well, no spooking, hissing, and like stated being reclusive a bit as a normal BP will.