Well, if you're looking for summery vetiver, I might suggest you go with Roger & Gallet Vetyver. It is nothing but citrus and grassy vetiver. It does not last long, but a big bottle is cheap and can be reapplied at will. Further, there is a light skin scent that lingers after those glorious, bright first two hours, nothing you'd notice except on your own skin or that of someone very, very close.
Many great beach frags come to mind, and I'm sure you'll get some great suggestions, but since you mentioned summery vetiver, I had to put in a word for that one.