The only issue I see is a) you need to disconnect your bilge
pump so it doesn't try to run while frozen
b) you need to find the source, blue chalk helps you to trace water leaks, just sprinkle it on the likely places and see if a water trace runs through it (you can get it in bulk from a hardware store, use the chalk made for chalk
lines).
and of course C) your bilge is too small to open a for profit ice rink