Ok, as some of you may know im cutting hatches in the boat. Ive already done the back. I cut out an 8" hole and everything around and under it so I could put a 8" tube in there for dry storage. Ive had some people concerned about it though. They say it will kill the floatation in the back of it. So, I figured just fill it up with some good stuff and then insert the dry storage tube. Any thoughts?