Don't forget the EB is an HPR - Hunt Point Retrieve style of dog. This makes for some lack of welcome amongst spaniel and retriever handlers and clubs - not universal however. Take some time with Rory Major (Bryantscroft Gundogs) he has after all made up a Brittany to FT CH status!
Rated 18th most trainable dog.
Trainability score here.
EBs are very intelligent dogs who learn very fast - bad stuff faster than good stuff perhaps. It always amazes me how people want a thinking dog and then tell it off when it thinks or itself.
Before going down the 'push into position and correct if wrong' route try reading a few of the articles here. Clicker training does not yet have a place in gundog training - but there is much to be learned by understanding how the system works - try some of these articles, and the specific article here on training a gundog to heel. Clicker retrieve here
An article on gait analysis of athletic and working dogs - how to monitor any pain the dog may be in by observation of its movements