Fiberglass Boat flexing when I hit waves

Hey All-

Been a long time since I have posted a thread on here . I got a question , on my Hydrasports Bass boat ,I can feel the floor flex when I hit a wave ...nothing drastic but should I be worried the thing is gonna break in 2 on me LOL its a 1982 model . I have put a new floor in it a couple of years ago

All boats flex to a degree I would examine the hull closely with a flashlight to see if there is any checks or cracks in glass if not I would not worry about or Google the issue