I'm with you on this one Grachan, I agree they didn't expect the rider he once was, but I went to Bradford v Swindon to see him in 1990, and it was pretty painful to watch.
I also really used to like Chris Morton who has been mentioned, and he did eventually get back into decent scores in the lower league when he rode for Sheffield in 1993, but it was horrendous to watch him in the first half dozen or so meetings (even allowing for the rest of the Tigers being totally rubbish at the time!). I know he had been out for two years, but he was struggling to pass riders who, with all due respect and no offence meant, wouldn't have got within a lap of him at his best.