hi manxman are you the same manxman from worldseafishing.com.do you know a seahog hunter called seafarer as it came from IOM (shot in the dark but it's a small world).good site this plenty of advice and knoledge here.sorry can't help with your question but.
i bought the seahog from dave at ainsdale boats.it had a iom sticker with a registration No on it.i've just put a new tohatsu 40hp on it and it goes like ****,as fast as the small speed boats