Best answer.... Don't fiberglass... Fiberglass pools come as one structure. Replaster or get a new liner....
Silicon adhesive caulking, Marine Grade would be prefered
I would use 100 % silicone.
Usually iron
yes you can put it in the pool. However, it may damage it.
Substances????
YES
put a quarter at the bottom
I would not suggest a water trampoline for your home swimming pool. You can not control the trajectory when you jump and injuries could be caused if you strike the pool skirt.
Water and chlorine.
Pump the water out or put a cover over the pool.
I will not use the swimming pool today until after you chlorinate it.
'Swimming Pool', sometimes shortened to 'Pool'.
Put a scratch and sniff sticker at the bottom of a swimming pool
There is no such thing.