One pair of jeans and shorts is usually enough and a pair of light cotton pants for travel. A good thermal moisture-wicking undershirt (Blue Johns are fab) and a pair or two of light cotton-mix turtle necks, cotton socks to wear inside wool socks - a fresh pair for each day, and foot powder (your room-mate will appreciate your using it after 10 hours in rubber boots...offer it to him too). Polar fleece and scarf for morning. Swim suit. Sunscreen (spf 30) for sure in August..***.put it on just before heading out especially around neck and top of chest and bring a tube out in boat!!!!*** Polarized sunglasses. Four to six long- acting cold tablets and same # of aspirin.
If you have your own favourite reel with fresh line (30-pound test) bring it along...by August, some of the lodge reels (even Islanders) have seen far too many fish and use. Some self-closing plastic bags to hold dry kleenex and things like spare memory cards, batteries etc for camera (charge your batteries well before going).
Take loads of pictures, at least half with your flash on even on sunny days and turn camera vertical, get close and really fill the frame. I usually take six to eight pics of each fish held in different poses and definitely flash on if backlit. If you can afford it, get a fully waterproof Pentax or Olympus point and shoot.
The lodge will give you a baseball cap and license holder.