Bought the Sport edition to get me by the 4th of July at Lake Eufaula, OK... It did more than get me by. I tethered it off the bank about 4 feet (the boat/25 foot Cobalt), put the eye to the wind, and augered the SandShark Sport in about a foot and a half of water, fully extended. Used a standard weight anchor to tie off the back up to the shore. Did all the above Friday afternoon, by Saturday afternoon when we were ready to take off for the day, it had not moved an inch. Used the same set up the rest of the weekend, until storing boat in slip... Worked so well I ordered an XL for next season- Highly recommend.