Dave,
No I didnt think about the keel plate - I have never had a problem here, so I dont think its worth it - the keel band however is invaluable.
Ill let you know how I get on. I have a 50mm section at 3000mm long which wil go from the stern to abotu 3/4 the way up, from here it narrows over about 600mm to 20mm width - here I intend to grind the profile.
The 20mm section is 1600mm long which takes me up to the winch eye. I may not go this far however, I may stop just where the keel begins to rise.
Ill probably do a write up and pictures for the site if I get time.
Adam