Thanks for the compliment. The posted photo is from my boat.
I put a padeye just behind the windlass and it is anchored to the deck with a backing plate. I tie the anchor off there. I run form the padeye to the chain and pull it tight then tie off with a couple of half hitches. Easy to remove yet it takes the strain of the anchor off the windlass. The windlass is tough but I do not want the anchor on the bow pulling against the windlass it would eventually wear the windlass gears. They are more expensive than the line or padeye.
Be sure that you use a carriage bolt through the roller to hold the anchor mate to the bow roller. I had a regular bolt with a couple of washers and a lock nut washer then 2 nuts holding the anchor-mate on the bow roller. Appeared correct. It failed. The roller, while spinning and letting the anchor out, had enough friction to release the lock washer and release nuts. The anchor-mate spun off the nuts and took a leap into the water on the 3rd anchoring attempt. Pissed me off. Mantus were real champs and when I explained the problem sent me a replacement.
When I install it this time, I will use a carriage bolt so that the bolt cannot spin only the roller bearing will turn. Further I will use a lock washer and a nylock nut on the bolt to reduce the possibility for the nut to back off the bolt. And I will watch the system carefully for a few times to be sure it does repeat the previous experience.
I have a tension lock for the anchor chain, but I have not yet installed it. still considering the design.
@LeslieTroyer installed the tension lock on his anchor system. It works, yet had to work on a way to match up to his chain. I like inline chain locks and still considering them as I think I have the room. They have a real positive lock design.
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