There's two more places a hand rail may be of great benefit:
1. I placed 10-12 inch grab rails on either side of the cabin doorway mounted on the flat down-turned lip of the cabin top to get a very secure handle when stepping down into the cockpit from the gunnel. This is a much better position for a handle when coming down into the cockpit. The factory ones on the outside edge of the bulkhead are better when going up to the gunnel, but not down. These won't be of great value there when you have a bimini top up blocking their access, but otherwise there of great value. Also, in really rough weather, they help when getting forward into and through the doorway from the cockpit. (Overhead handles, like the optional ones inside.)
2. I also placed 18 inch hand rails on either side of the forward cabin trunk top for secure handles when going forward on the gunnel to the bow rail and bowsprit. There' a "no man's land" without a safe hold from the handrail added to the brow till you get fully forward without this added rail set. No problem in calm or moderate weather, but if the bow is heaving and you have to go forward to tend the anchor, etc., there's about two steps you have to take without any handhold support. You can always come up through the hatch in the trunk, but then you stand the chance of putting a wave full of water into your sleeping bag/clothes/ nightly companion/whatever.
Maybe one of both of these may seem extreme to the nimble younger C-Brats, but as you get older you need all the help you can get with your limited strength and mobility.
In either case, the extra support might just save you from injury, an unanticipated swim, or even your life.
Good Luck!
Stay on board however you can......................!
Joe. :teeth :thup