I never owned a cell phone but alot of people I know have jumped in the lake with their phones or other small electronics that were not waterproof and ruined them.
better not buy any cotton candy either then, the lake will dissolve that in no time...
My suggestion would be to move away from the lake.
all kidding aside, video output is neat, but I'm with Texasmame, if I was in the market for a PSP, I'd buy the current gen one on the cheap as they blow them out.