depends
If your Danforth has a loop at the back end of it, this is where you attach your trip line and float. A float is not necessary, but if you run the trip line along the main rode, it will likely at some point tangle. Best to keep it separate. That way if you anchor is indeed to secure into the bottom to come up as you take up slack on the rode while sailing over the anchor, you can take another whack at it by tying a shorter line to the trip line and pulling it out backwards as you sail over it. Not all Danforths have a loop for a trip line to attach. If yours does not and you think it is not prudent to weld one on to your galvanized or ss anchor, (or drill a hole and attach a carabiner) and if you can dive on your anchor, you can attach a line around the rods that protrude from the sides of the flukes, (sorry, I have forgotten the terminology). Drilling a hole or welding a galvanized anchor will create a area vulnerable to rust. If you have a ss anchor, and can have someone weld an ss loop on it you are okay. Better off to buy an anchor with a loop at the back of the shank.
