We were going to go get some 8" lettering and adhere it to the front top of our rig, but then decided we don't want to put stickers on it.
An idea we came up with is to get some foam core board and cut it to fit a couple of our windows that slide open. Probably a window on each side of the Monty, and also a rear window.
Then we'll put our MOC number on the foam core boards using large self adhesive lettering.
If cut correctly, the boards will fit into the window tracks and will travel there comfortably. Having the day/night shades in the down position behind the boards will help insure that the boards stay in place.
We'll be able to have our MOC number displayed in large enough lettering so others passing us in the opposite direction on the interstate can easily identify us. The boards will be very lightweight, easy to display, easy to remove and store. This probably won't work for those who opted to have the very dark tint on their windows.
We had another idea how to display the MOC number but our Montana is in storage so we haven't been able to go test this yet. It would be to display the MOC number with self adhesive lettering on the edge of a rear ladder step. People traveling behind or next to the Montana would see it. We just can't remember if the shape of the steps will allow for lettering?
And lastly, we had a license plate frame made with our MOC number and the website address.