Easypoxy is not a real epoxy. It does not require a second part to cure like all true epoxys require. I have used Easypoxy and it is a super durable paint but not an epoxy. It says so right on the can. The name "Easypoxy" is very misleading. It may be just the paint you are looking for though. The organic vapors from Easypoxy are not nearly as bad as those from real epoxy...so from that standpoint, it is a safer paint to apply although you still need to take precautions.
I should have been more explicit about applying epoxy or any sort of two part paint inside from a curing and safety
First, if it is a warm day you will not need a heat lamp because the air temperature will be well above the dewpoint and you will not need to worry about condensation. Right before you leave the boat for the evening you may consider using some sort of heating
device in case there is a chance of the air temperature reaching the dewpoint that night.
Second, if you do choose to apply epoxy inside (and I still think it would be overkill for your application) then get a seriously large fan, open up all your ports
and hatches and use a chemical respirator. A positive pressure mask would be ideal if you can manage to get one. Also, have somebody else around to keep an eye on you. For goodness sake, stop and get outside if you start to feel light headed or "drunk" in anyway.
Let me know how things worked out today.