Re: shooting positions and bipod selection
When I took the children elk hunting, they picked the bipods they liked best for the situation, and I carried a (Caldwell) field pod, which is a tripod that provides great stability for longer shots from higher levels. Didn't end up needing, but the children and I have both practiced with it a lot, and it offers excellent stability at higher sitting, kneeling, and good stability at standing heights.
It's not that heavy, and it is adjustable for a range of lengths, so it is completely compatible with a bipod. I'm not sure I would want to carry it up and down mountains with a long range rifle, but over flat ground it wouldn't be a problem.