So you are saying if someone spotted a cyclist on the sea wall at 3.00ish in the morning that night it would mean nothing?
No, I’m not saying that at all, I’m saying there was a risk whichever way he chose to go. I’m saying there was probably less chance at that time in the morning of being seen. For someone to kill someone away from home, there’s always a risk of being seen, but Killers still choose to take such risk, they try their best to do it and not be seen. The Yorkshire ripper killed for nearly 5 years and was only picked up by chance. Levi Belfield killed for years before he was caught, every killer takes a chance, and it will still happen today.
Where did I say it means nothing if he is spotted? I said there was a risk, all he can do is minimise that risk.
To get a description of a bike you would have to be close, especially at night, if a person was that close Bamber would spot him I would think, so he could abort his plan.