A lot more cedars in the bottom for sure. I have built some cover but no where near enuff. Most certainly would put in some kind of post for a dock. More rock beds on bottom and more skids for spawning. Also would have made it bigger. I have redug mine 3 times now. Twice before I found this forum. Go as big as you can = less mowing. I made one side alil to steep to mow safety so I would have fixed that. I hope some of these will help ya.