When I set up a kneeboard for my Mountaintopper, I just ran thin elastic cord over the various components to mount them to the board. The MTR-4B's front panel easily handled the thin cord without blocking anything, as did the Elecraft T1. Even the Begali Traveler strapped down easily with elastic cord, since it is just an aluminum brick with flush adjusting screws. However, when I tried to mount my Elecraft KX3 to a board, I ran into trouble. The front panel was so "busy" there didn't seem to be a way to just run cord over it without blocking something. I decided to run elastic cord loops over the KX3's folding feet, as shown in the photos below. Two short loops will not work, as there isn't enough "stretch" available to insert the feet. However, running a single piece of elastic cord permits stretching the cord under the board to enlarge the loops while the KX3 feet are inserted, one at a time. When the small loops are snugged up, the KX3 is held down. Antenna connects at the top and an external battery connects at the bottom, with no wiring on the notepad side. Also, the KXPD3 is in a usable position.