check with the boat owner, and see how much anchor rode (line) is on board, and whether there is a chain leading to the anchor... you want the length of the rode to be 7x or 8x the depth of the water ... most non commercial boats have way too short anchor rode... the longer the chain, the more it helps secure the anchor... a bucket for a sea anchor helps...make sure you don't anchor off the stern and try to back down on the anchor to unlodge it... it is easy to take on water if the driver is inexperienced and the anchor pulls the bow or stern under...be prepared to cut the line if necessary, you can buy the owner a new anchor and rode later....

I have a good hush puppy and Key Lime pie recipe to go with the seafood... have a safe trip