If the repairs were on my old rig, I would fill the hole with fiberglass repair for strength and top off with gelcoat or paint.
Auto supply stores will have the bondo stuff. A marine store will have gelcoat.
If the bottom crack is all the way through the panel and you can see the back side of the crack, I would bondo some fabric on the back side and fill the area with the bondo, then gelcoat.
At each location, you will want to grind out some of the surrounding good material to create a strong adhesion base for the bondo stuff.
You could then apply some temporary paint that almost matches or tint the gel coat layer.
This type of repair is really quite forgiving. You could also hire a mobile repair guy to do it in your driveway. I got his price ($700), already had matching paint, so did it myself (first time for fiberglass repair) for about $25.
Lots of tutorials on the internet, including varying qualities of U-Tube videos.
