Many recommend vaseline on legs&arms in absence of a wetsuit - the water in our lake is currently 17°C and with some warm days over the next 2.5 wks perhaps it will warm up to 20.

Remember I'm doing a sprint, I wouldn't do any longer distance in this temperature water without a suit but I wasn't going to spend the money before I know I'm doing more races.

Does Vaseline feel nasty on the bike&run?