I think this thing is pretty cool! Definitely for shallow water, but I worked excellent in slightly deeper water as well! I would LOVE one a little bit taller as well!
I bought this as a second anchor for a 25 ft pontoon boat to avoid the swing back and forth in the wind. The sandbar we have is a little deep for the anchor (it was submerged when I drove it into the sand) but it worked like a charm in steady 15+ mph winds.
The Sand Shark was very very easy to use. I have only used it one time so far, however it kept the boat secure for an easy 6 hours. Once screwed in, it was in place and never moved. Assemble was super fast and easy.
Mel S. 
