It's not an obvious point to someone new to all of this that this work is very simple on a CDory compared to a Sea Sport (for example). Having addressed quite a few core small core issues on various cored boats, I can't complain about my own boat. It's easier than the others, by far. Many people I speak to about purchasing a CDory have done a bit of research, and looked over the boats, know about the inherent core issues, but still don't realize they are standing on top of the hull when onboard.
No way would I buy a boat that needed to be completely rebuilt, No way i would expect to find a used CD22 without SOME core issues, unless given the pre-treatment on all penetration prior to first splash. But no way would I scrap the boat I own if it needed a recore.
Certainly the work I have already done make it so this is a less daunting task for me than someone with no experience. However the point is, with a bit of experience (by no means a full time, pro fiberglass man) I'd take on a recore, and it would be RELATIVELY easy. As about the worst thing that could go wrong on the boat, that's re-assuring to me.
What this translates to in terms of advice for those new to any of this is that one need not insist their used CD22 be completely dry in the core. It's not a reasonable expectation, and addressing MINOR core issues is something a fiberglass rookie can take on, or a pro can handle without a ton of cost. As are making current penetrations into the core watertight for good, even if they are not leaking.
In other words, I'm making the point that if a pretty good fiberglasser would tear right into the biggest project my boat might ever need, then a small core repair shouldn't turn anyone off. Rather, it should be expected as part of owning a CD, and dealt with as the generally minor issue that it is, NOT as the major design flaw and source of constant nagging worry that seems to pervade some owners to the point that they can't enjoy their boats from the worry about their cores.
For what it's worth, there are a couple of really good descriptions of both coring and recoring a CD22 on here... somewhere... that would be more informative than me saying how its a RELATIVELY small repair in the world of recores.
I don't find anything you wrote abrasive. If everyone agreed things would get boring fast. Also, as in the past, I like things that may be unpleasant for others. I find suffering to be a great teacher, and have a thirst for knowledge, thus pain. But I'm not encouraging anyone to take a recore lightly or think of it as a minor thing. It's a big job, just way smaller on a CD22 than the competition