I want to begin taking pictures in the water. not underwater 300 feet or anything, but I'd like to jump off my boat and get some pictures of it, or some pictures of skiiers passing by... I have seen some AWESOME shots that you can only get if you are at water-level. Basically, I'd like to be able to dunk my camera in the lake, and it not get hurt. If it makes a difference, I am planning on a 30D upgrade in the near future. Any ideas for this 'waterproofing'? Note: I would sure like to use my Canon 17-85 lens to do this. If not, then my stock 18-55.