There is a company that makes a sling swivel that will replace the front screw on the forend. Works just like a rifle, you can carry your hunting pistol with a sling attached to the bipod. Also, you can use it to replace the screw on a Pachmyr hanger bar. Works excellent.
Also, if you cant find one, you can get a threaded sling swivel, and modify it with a the proper amount of small washers and a nut to hold them in place. Works excellent. I would be a little afraid of screwing a stud into the wood. It might not last very long, but then, it might work just fine. The worst thing that could happen is it might strip out the hole, no big deal.