My jetski sank in the bottom of the lake!?

okay so i was riding it and i hit a huge rock, this rock was like enormous, anyways all the sudden i noticed a speed decrease i looked at the rpm everything is ok, so next i notice im tipping to the left i pull up the hood and there is a gash about 5 inches long and 3 inches across, the rock had tore my hull. is it worth it to get it out, because yesterday i went and i tore the vin and hull numbers off?