If I am to understand you correctly.....chine lock is the inabillity to turn a boat when the chine digs in..ie, the hard edge of the boat digging in....
No, never experienced that......when the boat is heeled over, the first chine between the upper plate and next lower plate...acts as a "V-shape" for want of a better description, but this " v-shape" tapers to nil as you approach the bow. ie, the "chine" pretty much "disappears" close to the bow.
Once my boat reached a certain angle of heel, it typically, would go no further....can't remember exactly how much anymore, but quite comfortable.
The Roberts
boats typically have long overhangs, with relatively short LWL dimensions. My LWL was about 29' .....
My boat sailed well under
autopilot...both
electric and
wind...
The
ketch rig makes balancing the boat a breeze....and neither the main nor mizzen were difficult to handle, being relatively small. I often
single handed the boat with ease.
I had several
jib sizes, all hank on's....plus a
spinnaker, which I often flew..in addition to a mizzen staysail. I have 100's of photo's.
I loved that boat, I was never concerned about hitting anything, like a floating container...'cuz it was super strong.
My boat was a
center cockpit. It worked, but ideally, it should have been an aft
cockpit. The walk-thru'
passage was a tad small. Not a problem, but tight...but if you are a 250 pounder, it would be tight.
There was a guy on this forum that had bought that boat and was in the process of converting it to an aft
cockpit. He renamed the boat "Hagane" and if you search the word "Hagane" you will find his threads. But he quit
posting, so not sure what has happened to the boat. It is somewhere in the
Sarasota area, if you are looking for a
project boat.
I actually wrote a book about building it, if you are interested. Just PM me and I'll direct you to where you can find it.