I love my single bolt conversion for the DLE 30. No more head aches drilling4 bolt holes and I can use the APC 18/6W with no problems.
Whats more I've hit several tuffs of grass and had 2 prop strikes this summer. So the single prop adaptor and prop have saved me several dollars and If I do have to replace the crank and bearings later it's still been cheaper than all the wood props I would of boughten.
Our bluegrass here in MO you cut it one day and 3 days later you'll have those prop killing tuffs poping up