Re: Boat is hard to winch and keel scraping main beam.
... I can lift the bow but that doesn't mean I can crank the weight of the boat across the bunks. ... I have lifted the bow a few times to get it centered on the front keel roller...
...I'm not sure where you'd mount a roller? Do you have a picture or something? The bow stop rotates freely and when the bow makes contact it rotates up. The boat sits firmly on bunks with a strap over the stern so I was never real worried about it flying off the back. I've considered that though.
The Strap roller bracket is something that you would need to fabricate.
I can't suggest how to do it because all we have is a side view of the Bow stop strut.
What shape is it? U-Channel? Box tube?
What are the dimensions? Wider than the Strap?
If you can lift the Bow by hand, picture what would happen if the bow strap or winch failed at highway speeds and the wind starts to lift it!
The boat is going to do a back flip!
The Winch is for winching! It is mechanical and prone to failure.
The strap is fabric and prone to rot.
A safety chain is much simpler, more reliable and redundant.
You may go like this for 20 years like this without an issue.
You have just been lucky, not safe!
Murphy likes to hang around trailers.
I originally assumed you had transom straps. I now see the Gunnel strap.
This holds the boat down but not from sliding.
The way the boat is secured in the photos; If you were it have to make a Hard/Panic/Emergency Stop; The boat is going to slide Forward, It is not in the bow stop, it is not even aligned with the bow stop, the winch strap is going to go slack, the boat is going around the bow stop and past the winch, hopefully the winch strap stops the boat before it goes through your back window.
The bow needs to fully in the bow stop with the bow eye under it and touching it.
The bow stop is not a cosmetic item, it is a critical safety item.
The Safety chain is the insurance policy.