I'd give it a try, but the "crotch rod" mounting strategy looks awfully uncomfortable. Engineering students have been building "underwater bicycles" for human-

I'd give it a try, but the "crotch rod" mounting strategy looks awfully uncomfortable. Engineering students have been building "underwater bicycles" for human-powered submarine competitions for decades! https://internationalsubmarineraces.org/ https://internationalsubmarineraces.org/