I would follow Graham's advice very carefully Ali and not administer a misplaced, sarcastic response to a forumite with considerable experience in pike fishing.
I did as you did many years ago on a wooden fishing platform when I first started fly-fishing for pike until I recognized the error of my ways. The first fish I caught ended up with a splinter in its eye. I haven't done it again since.
If I know I'm
not going to have something soft like grass to rest a pike on out of the water I'll either take a mat or unkook it in the water. Unhooking mats are cheap and easily portable nowadays if you need one for this purpose.
Good luck with your future expeditions.