Mine is similar as well, a 16.6 lb Horizon Claw (Bruce style) on a roller and an aluminum Guardian G16 (Danforth style) on a bracket attached to the pulpit. I cut off the tip of the locker to allow the chains to pass through. I added a divider to keep the rodes separate so I never have to fight tangles. Both rodes are 20' of chain with 150' of 3/8 three strand anchor line. I added an eye bolt to terminate the bitter ends inside the locker. The Claw is kept in place when stored by a tether with a SS snap hook. The Guardian is kept in place by a SS snap hook that is attached to the pulpit with a SS clamp. It clips into the chain shackle.
I'm a firm believer that both anchors should be in place ready to deploy with no setup required. I also feel that nothing should be loose or dangling. My setup is secure and works great on the water as well as on the freeway.
When either or both are in use the rode is simply cleated to one or both of the bow cleats. I often set both anchors to reduce the radius of my swing. Of late I tend to set them 180 degrees apart. This is super easy to do, and parks you in the exact spot you want to stay. I go into the wind and drop the first, fall back to near the end of the rode, cleat and set. Drop the second there, then pull back in the first as I pay out the second until I am in the center. Cleat both, power forward to set the second, and then relax for the night. The boat will now swing in a very tight circle much like being on a mooring. The nice thing is that it can still swing in response to wind or current changes unlike using a stern anchor.
In some cases where I don't want the boat to swing at all I follow the same procedure, but then pick up the rode going behind the boat, give it a little slack and then cleat it mid-rode on the stern cleat. In essence this creates a stern anchor without all the hassle of removing it from the bow. This is most useful when I want to keep the bow pointed to a traffic area that is creating wakes.
We also sometimes do a similar thing using a stern shore tie. I carry 400' of 3/8 poly that will let me go from the boat to shore, around something (tree), and then back to the boat. This setup makes it easy to leave, you just release the end and can pull the line back in without leaving the boat. This takes advantage of the Macs shallow draft allowing you to tuck inside everyone at a crowded anchorage. Drop your anchor and then back in really close to shore, set the anchor, then use the dinghy to place the shore tie. You'll stay snug out of the way with no worry of swinging into other boats. Many of the Canadian parks actually have rings placed around the shore just for this purpose.
I prefer to set the anchor on at least 5:1 scope, and once set am willing to ride on as little as 3:1 scope. Don't forget to account for the tide. Up here we get 14' tide swings and you have to consider where you are in the cycle when adjusting your riding scope. I find it really useful to have a set of the plastic rode length markers inserted into the rode every 30'. They are cheap to add and make it really easy to know how much rode you have out for scope calculations.
