I am looking for a bipod to use with an AR15 Varminter. I would primarily be shooting prone but would appreciate the ability to shoot indian style (not a necessity/dealbreaker by any means). What height bipod is typically used for prone shooting? It also need to have a "tilt" feature--to deal with uneven terrain. I do not require a swivel feature or the ability to shoot indian style, though either would be a plus. Please specify the manufacturer/series/model. Thank you in advance.