For a cheap quick fix you can use a product called Aquamend. Found at Loes or Home Depot. Its a putty that will dry hard and seal the hole. I wouldn't do this if you planned on matching the gel. I don't know if it will accept it. The mend will dry an off white color and be hard as a rock. Good product for small repairs.
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2004 Supra Launch SS
Acme 913 prop, WS 420, Kicker L5 sub, JL/Kicker amps, Kicker in boats, Polk mm in roswell bar, 3000# ballast.
"Never underestimate a man that Overestimates himself."