depends on the snake for me... I'm comfortable with any of my boas alone... The retics will be more of an ~8ish foot rule... My girl is already 5 feet and still a skinny noodle

so I'm sure she's not gonna put on much weight in a couple feet, lol... Any 6-7ft retic I've played with is still a noodle
The burm.... We've done the 7foot rule since we had her because she was 7feet when we got her... She's over 10feet now and about 50-60lbs

I know her strength just hanging on and I wouldn't wanna feel a BIG HUG, lol... So 2 ppl with her at all times