Hi.
Decided 50 quid was too much for a Gramma Pad so decided to make my own. Spent about half that. Most of it on a couple of Proel Isoblocks. The rest was a cheap door mat, some scrap strand board, black paint, UHU and a couple of screws.
The Proel blocks are interesting. Kind of a foam wood sandwich. The top is high density foam, the bottom is very coarse foam and the wood in the middle is very light. I tried them on their own straight under my 210 on a temporary hollow high stage in a very large school hall and there was no boominess at all. Pretty punchy.
Surprisingly the coarse foam doesn't collapse much. Only downsides are that the coarse foam makes the cab a little wobbly, which is a result of the de-coupling with the floor. And the high density foam is a little fragile. It dents easily, which is why I decided to make a board.
Looking forward to using the board now
Photos below. The small block under the front is a carry handle.