I'll take a shot at it. I wouldn't worry about the roller furler
one. It isn't structural, it doesn't appear to be cored and it doesn't look delaminated. It should be easy to fix, but you should fix the underlying problem that caused it.
The gelcoat blisters
are because there were air voids in the original layup
between when the gelcoat was applied to the mold
and the first layer of glass/resin. Most boats have a couple of these spots, even if they haven't broken open yet after many years. They are not structural at all and nothing to worry about other than the cosmetics. You can just fill with fairing putty, sand and paint
over with gelcoat for a quick fix. In your case, it looks like a particularly careless job and the voids in the non-skid will be difficult to repair to a good cosmetic level. Given how many it has, you can probably count on seeing these voids popping up regularly as this boat ages.
The last picture looks more serious. It appears to be the edge of the sugar scoop that rubbed against a dock
. It is pretty torn up to see well, but it looks like a foam cored construction. Repairing this will require cutting away the bad area back to good foam and glass and rebuilding it. Luckily, it isn't a structural component and it doesn't look like the damage extends past the lip, so if there isn't further water
intrusion or delamination
the repair should be straight forward. This one will take a good glass guy to blend the repair well into the rest of the hull
I can't comment on cost because that varies so greatly.