That's a relief 😃 I made up a board of 1/2" ply to which I bonded a sheet of 1/4" rubber. Works really well with the Creedmoor. I also have a bag, but mine is filled with garnet I scounged from a mate who does media blasting. It's super fine so will find any leak however small, but is very heavy.
My FTR bipod was an indulgence when it first came out and whilst it was a big financial hit has never disappointed when being used. I have made a bevel drive for it to use when I'm using a bipod extended, but the nylon screws that grip the hand wheel tend to make it fall off with a heavy recoiling rifle. It needs a bit more development but it does make adjusting the bipod much easier, without breaking position.