I can't speak specifically to the 41 design/construction and only offer the chain plate/stringer info below so that it may provide insight to you based on my info/experience on the chain plate for my H31, its composition and connection point into the hull/stringers that Hunter used.
One suggestion is to check your owners manual or this site for your specific boat to obtain a picture or diagram of the chain plate configuration similar to the "pdf" diagram attached that I have for my H31.
On my H31 I have approx. a 36" x 3" x 3" carbon steel angle plate that spans the stringers on each side (again see diagram). Unfortunately my attachment point developed a rust/metal fatigued area where the rod connects that was not visible in the small inspection area Hunter provided. The solid stainless steel support rod is welded to the base of the shroud/rigging deck attachment and has a threaded section on the bottom and screws into a threaded castle nut that is welded onto the angle plate (pic below).
If Hunter used a similar construction approach to rigging attachment on your boat, then you too likely have a small "inspection" area to inspect the rod to plate connection. Mine is approximately a 3" opening. Since my angle iron/support rod failure (see pic attached of bent rod), I have added 6" inspection ports into the area just below the rod attachment point for future inspections with a camera (see pic of cut out areas for inspection and repairs to plate). I also went with stainless steel angle plate similar to the new support rods to avoid dissimilar metals issues.
In order to access the old angle iron plate for removal, I had to cut sections in the interior of the boat liner equivalent to the length of the angle plate in order to slide it out and also for attaching the new SS angle plate/rod assembly.
If you have specific questions, please send me a PM and we can discuss from there. again, hope this helps answer your question.
