You don't need that big of an anchor. A 12' skiff isn't the most stable platform and trying to pull a 35# anchor is asking for trouble. Get a light Danforth and some chain the length of your boat. 3/8" 3 strand should be sufficient to hold your boat. There are days when you won't have enough scope on your anchor line. 150' of line will fit in a bucket and let you anchor in up to 75' or so of water with a 2 to 1 scope.