Don't know what all you've tried but it looks like a spare regular fender tied off of each of your pushpit braces at the right height would do the trick. Maybe tied together at the bottom to keep them at the correct angles and in place and keep them from spreading. I'm coming at this from the standpoint that you'll want to try simple solutions that don't involve much in the way of extra gear that you have to stow when not in use.
S/V Boccata d'Aria
I'm not sure what Dickens are, but I think they may be important and I sure as hell don't want them scared out of me.......Izzy