I fitted Keelguard to my 6m boat. Getting the anti foul off took some doing but I think good prep is what matters, as always. I fitted over chines without any drama. The boat was on a drying mooring for over a month and I gently beached it countless times. The guard is still in good condition. I bought the product on eBay from the US.
Keel guard won't protect the tubes when she heels over I would have a mat that covers the hole boat underneath with ropes to buoys fast to the mooring drop buoys off boat and replace when back from sea we use rubber door mats to protect our boats from marine growth when around structures bought from b&q cheap tie wrap together replace when damaged
spy-sea-one
