A dumb snorkel question

[California Girl]

a bad pair of fins can ruin your vacation (ie blisters and sores). Good luck.

Yeah, that's one reason I'm being so careful about this. Last year, we rented some equipment for the day and I ended up with such bad blisters on my toes, that that ended any more snorkeling for me the rest of the week. (and I couldn't wear my open-toed shoes when I had to go back to work the following week!) I surely don't want that to happen again!