Tip1: Treasure Junk - Handspan is a fantastic boat/ tour. Check my review and pics.
Tip2: 2 days 1 night is enough.
The garbage is jeopardizing this amazing site. You can see tons of plastic bags and bottles everywhere. We kayaked from the Treasure Junk to a desert beach that was completely full of garbage. It's a little sad.
This was one of the highlights of our trip. The quality of the tour is very important to enjoy it properly. It's why I recommend the Treasure Junk.