'lee speaking up here on what I prefer, I mean, you know....if I happen to be getting tickled. ;-)
I think being free to wiggle is fun in some cases.
In other cases, loose bondage is good. If you stretch someone too tight, it just hurts. Seriously. so by 'loose bondage' I just mean you do what you have to to make it so they can't actually squirm away from you, but can still squirm a little bit. Got that? ;-)
Also, strangely enough, as far as an actual position, I am more ticklish on my sides and underarms if I am laying on my tummy with the 'ler straddling me and tickling those areas. I think it is a mind thing. 🙂