Here are some pictures of my new rest, made from a cut-down-and-narrowed kids' swing set. The oblique bar is the other half of the original top-bar, and can be adjusted for fit. Wingnuts allow it all to be taken down for transport. The grey sleeves on the feet are for height adjustment but obviously not enough - I may have to put bricks under this one.

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The cushions are adjustable, vinyl over soft and closed-cell foam sewed up or upholstery-tacked to wooden bases. for a really solid rest, leather sand bags would be better but may possibly be less db-rifle friendly.

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No, that is not a db rifle yours truly is posed with; the Heym is still being finished in Germany.
A couple of tips: don't wait for the photo shoot to test it with a firearm. Holding up your hands like a bare-nuckle boxer gives no idea how its going to work. If you need to have the frame square on to the target, the RH side of the oblique bar would need to be chocked out.

Cheers
- Paul