Re: bow/anchor roller pictures?
Measure the distance from the cockpit area where you would be retrieving the anchor to the farthest point that the anchor line would go in the opposite direction if the boat were swinging to and fro at anchor.
Then go down the anchor line the distance from the bow eye to the same spot in the cockpit you used for the first calculation. Via a knot or other suitable device, attach the snag line to the anchor line....just a looped half hitch in the anchor line would work great....you'd get a loop to tie the snag line to and it wouldn't slip up or down the anchor line. The other end of the snag line can be secured to a nearby cleat to keep it handy for anchor retrieval when you are ready to upanchor.
The idea is that you pull in the shag line and bring the anchor line with it. It is still attached to the bow eye and the anchor is still imbeded in the bottom of the lake or whatever......this is why it is easier and safer to motor into the anchor which will take pressure off the anchor line for you to take it in, and will keep your bow into the wind/waves for safety.
Once you have retrieved the anchor, just allow the anchor line, from where you are to the bow cleat to line to lie on the deck....around the end of the windshield and past the bimini bracket, if you have one, ....maybe use the same cleat and tie the snag line to it which will keep tension on the anchor line from the bow and keep it from going overboard while underway.
I have done this before and it works great.
Want more, ask.
Mark