Anyone ever under brace/knee the gunnels?

[Blackfin26]

Sounds like you have enough beef under the gunnel. I have a couple of knees besides my swivel holders but I'm also considering a U- clamp around the base of each one. However, instead of bolting thru the hull, why not glass in some backing (3/4 plywood?) and then tap into that. I've seen that done and imagine it would be strong enough.