I'll have my young boa out 3-5 days per week, but only she seems to be one of those snakes that appreciates out-of-enclosure time. If she were a more nervous individual I'd only have her out once or twice to keep her tame. Sometimes it's just a quick pick-up-and-check, other times I'll let her climb on me or put out some snake-friendly structures for her to climb on, but most of the time she's content to just sit and chill in my hand. It all depends on what her inclination seems to be that day. I keep handling sessions to about 15 minutes and won't take her out more than three days in a row, less than 48 hours after eating, or if she's in blue.