I'll just say this, if you're not versed (experienced), in working with fiberglass you'd be better off leaving it to a professional. Boat shops are the best for these type of repairs. As far as letting it go for a period of time without repair? Not a good idea. You want to repair it and seal it as soon as possible to prevent delamination.
Just my 2˘.
'07 K3500 Silverado LT Crew Duramax (LBZ)
2016 Salem 27RKSS
1984 CHEV SCOTTSDALE K20 2GCGK24J0E1XXXXXX (Chevrolet Legends-Class of 2019)
"...exhaust fluid? We don't need no stinkin' exhaust fluid"