LOL. Ponchos don't work on Popeye. The park sells them to make money, and the people wearing them look doofy.
Be brave, get wet.
The thing you gotta worry about is your shoes. On Popeye, after you get in the vehicle, fasten your seatbelt, take off your shoes/socks, and put them in the middle.
Tehnically, you're supposed to have shoes on, but they seem to be nice about this. Guys, take off your shirt and put it in the middle.
Your cloths will eventually dry off. Its your shoes that you gotta save.