I have a Freedom Marine Electric 10X Troller (10 ft) and use 2 of the anchors to keep the boat positioned in current or on windy days. I'll be using them on ponds when waterfowl season opens next month. The smaller 1 lb anchors would probably work just as well. I used them on my center console boat (18 ft) and they worked well as long as there was little or no current or wind. Did fairly well in the wind when used with long anchor ropes to lessen the angle between boat and bottom so that the blades could dig in better.
I use these for my decoy long lines and they work good. The only reason I gave it four stars in the slide that holds the arms in the up position broke on some of them after a season of hunting. They still work but the arms are always in the down position witch makes it hard to store them in a decoy bag. I still use these every year and like them.