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Fodder, the bendytoy keelbolts are totally different from traditional keel bolts.
"Real" keel bolts are big J-bolts that are cast into the keel, made of stainless or (better) bronze. Most of the Benes don't use lead keels though, and they don't use J-bolts. They usually use cast iron keels, and because cast iron is stronger than lead, they don't use the long J-bolts. Instead they use short iron bolts (iron in the iron keel, makes sense) that may only be 4" long tapped into the iron keel.
Yes, this means they can easily rust. it also means--and this is an intentional design feature--that you should be able to UNBOLT each keel bolt, one at a time, and REPLACE IT, one at at time, with new keel bolts. Without dropping the keel, without any fuss. Just a big big wrench and some penetrating fluid needed.
I'm not sure I like the concept, or cast iron keels at all, but I can appreciate the logic behind it. You'll also find the folks at Beneteau USA are very fast to answer questions about these features, and that includes looking at pictures.
For a Beneteau? This is supposed to be (almost) routine maintenace, not a deal stopper.