There are some awkward "dobro capos" that mutate pretty huge in slide guitar context, but you can get the same trick of capo + string elevation by putting a little strip of... something underneath the strings and then a normal Schubb capo over it. Slightly flexy but hard polyethylene works, like milk bottle plastic only thicker... peanut butter jar lids?
INTO THE WEIRD:
But if you could only find a strip of plastic with a little ledge to go up directly over the fret, you wouldn't have to yank on strings trying to get them back in tune! ...while the drummer tells jokes!*
There is a brand of kittie litter called "Tidy Cats" that comes in big yellow buckets, several sizes, you don't want the one with a single mono-lid, but the one with a two-section lid where one section hinges up. 37 lbs? 35 lbs? I forget, but anyway the plastic pullstrip from those lids has a section in each bucket-corner with a perfect little ledge.... four capo-bunnies in all! Baby-blue or bright red, depending. There are better kittie litters, but those buckets kick ass. I could also tell you minutia like "replace the soft rubber sleeve on your Schubb cape with the hardest plastic tube that still flexes that you can find" but then what would you have left to figure out.... *(urp)
