Hulls dented in heat, will they popback??

Help, I am a new Hobie owner! I am restoring a 73 Fiberglass 16ft boat. When I left my hulls upside down on padded sawhorses to let the paint on bottom dry for 2 days they dented in. Will they pop back out when the boat heats up again now that the boat is upright? Or did all my hard work go down the drain. The hulls are old but have no soft spots or major damage. I did minor fiberglass repair for scratches and a few dents, etc. then put a new paint job on. We just had the first 2 days of temps over 75 and when I flipped them so the tops could cure they were dented in. Please tell me they will pop back out when they heat up again!