Hi Mike,
You have just bought into a successful One-design boat and, while you may
well have your reasons for wanting to move them, unfortunately that is where
the straps have to stay! They are in the same position on well over 1000
boats.
Just out of curiosity, you should ask yourself what the skipper would use to
hike off when sitting at the very back of the gunwale. They are there quite
often!
Best regards
ian