kenyan sand boas do fine in groups.A trio of 1.2.0 would be best because males can get territorial.you would need probably a 40 gallon breeder for them, females are 3ft and males are 2 1/2.
And yet another reptile that in my humble opinion is amazingly beautifull, very easy to keep and breed, with color morphs, etc, and yet it doesant for some reason fit most people "gonna get" lists