" what additional training is required for good OTB results?"
That can only come with experience of face to face play.
Correspondence chess is OK but remember here we are playing 30-40+
(some a lot lot more, I currently have 50!) games at once. Only one recent game did I
give it some thought Game 12597004
actually using an old book on the Philidor
by Larry Evans from the 70's.
All other games here suffered which is reflected in me dropping 150 Rating points this
year. Too many games as I jump form trap to trap and trick to trick. (some have come off
and I have a super-duper one for the blog).
But does playing here do any good OTB.
Well you are playing and thinking (in theory) so yes, it's not doing any harm.
Cannot think of an RHP game that has won me a game OTB game.
Tonight I won a league game in 13 moves. After 5 moves it was
a position I've never had before even though I have played dozens
of game with this opening on here. (1.e4 e6 2.Nf3)
You gain experience with face to face play,
it is a lot different from here. Some of the blunders here
(due mainly to game load) you would never see OTB.