Though we will use what is available in the field or prone, shooting sticks are used for almost all of our shooting. Feel very confident to 500 yards and maybe a little beyond... if conditions dictate. I don't particularly like "attached" bi-pods. Adds too much weight to rifle forend, hindering my ability for a "quick, snap-shot" in the timber. As we hunt in mixed terrain....it is impractical to put on/off bi-pods! And you are limited to the height often required in the field.
We use homemade,fairly tall (48"), stiff, lightweight shooting sticks. Not only do they offer a solid shooting platform... they serve as walking sticks, help stabilize us when maneuvering through rough terrain/downfall, etc., and have been used to help with foot placement when traversing a snow covered rock field. It would suck to "bust" a leg or ankle by stepping into an unseen hole between rocks. I used 1/2" fiberglass rods, with a rubber chair leg boot (with a brass rivet inserted inserted through the boot, for traction on a slick surface), bound together with leather lashing. Inexpensive and easy to build. memtb