dont think that the weight really matters, a penny will still sink wont it??
think i will check out the sporting goods stores, Singapore doesnt really have stores that sell boats as we're a tiny tropical island and those that do own boats normally import them so there arent many (if any) retail ones.
Reason i asked about that particular Olympus product is cos it is meant for their SW range of waterproof point and shoot cameras which are submersible to either 10 or 30 feet (depending on model) and i own one of those (the 790SW) and its pretty hefty and if it can float the camera it wont have a problem floating my Jet III Pro ST (needless to say the Fenix E01s and LD01s wont be a problem at all).
Thanks for all the input! You've been a great help.
3 cheers for CPF!