I mounted my EKP-IV without the gizmo in my RV-8 (gizmo used way to much room). I've no clue on posting a picture on the site, but I'll send you what I've got. I basically cut out a hole big enough for the back of the unit to fit through (mount from the front) and used an angle on the bottom to hold the weight of the unit and keep it from falling out and attached the top with a clasp that is hooked in using a camlock fastner. The unit is quickly removable and locked in firmly when installed.
I have mount many this way since the AV-MAP first came out and before gizzmos came along. None have fallen out yet in normal flight or while doing aerobatics. Saves a lot of panel space and cheap too.
Brian,
You could cobble something together using some of the industrial "plastic" velcro that would work fine. You might also find someone willing to donate the knee board that is using the Air Gizmo mount.
Avmap sells a fix mount Aluminum bracket (20$) it uses velcro and would be a good start for your mount, I have a laird owen panel and have the AV map canted to me , send me your email if you want a pic
Peter