Thanks, nothing too special though.
As for the fire starting when the ground is wet I donīt think this is a problem as long as the rod is not fully pressed down to the ground and the ferrocerium is partially exposed. If there is really some deeper mud you can make some stable area using whatever works - branches, something flat and solid from your survival kit, ... . Itīs not a good idea to make a fire directly on muddy ground anyway.
Nevertheless I have got some solutions on how to anchor the firesteel in order for it to be above the ground. I will send photos later.