That's true. He did admit he wore something similar to BG. But I do wonder how many men of his age group wore something similar anytime they were outside in February? But now that I read about his confessions, it all seems moot, as long as he was sane when he confessed.
But he admits he was out on that bridge so you also have him on the bridge and dressed like BG.
So a reasonable person has to then ask what are the odds that he was dressed like the killer out on the bridge and he admitted he was on the trails between 1.30-3.30pm in his original statement.
The defence have done 4 Franks and at no stage have they suggested he has a alibi for the time in question.