What I find with SureType is that it 'learns' exceptionally well. So if I type a previously unknown word I might have to backtrack to correct a letter or two, but after that it will allow me to type me word much more easily. If I later have no use for that word and find it's coming up too often I can delete it from the custom dictionary.
I've had an issue recently where "Osil" kept coming up when I typed my name "Paul", which I found was because I somehow managed to add it to the custom dictionary. It's worth checking if you have any rogue entries if you're experiencing problems.
As for what to look at whilst typing, I think I must be the odd one out looking at the screen rather then keyboard.