I know its been a long time since my last post, but its good news. I have been using the boat but only managed to get my slot in the boat yard a week ago so I haven't really changed much to comment on.
The findings were the trim tabs were not working as they should, all fixed now and the fuel tank had some water in it courtesy of a rather expensive fill up station at a local marina( tank drained and new fuel / filter water separator fitted). I have also fitted a laser II 14 x 21 S/steel prop and all is well, now planning from 3300 - 3500 rpm @ 22 - 27 mph and maxing out at 4400 @ 42 mph with 3 adults and 2 children one of the children being 17 so really an adult in weight terms + all the gear for snorkelling and lunch and drinks for the day out
. The prop on its own without the trim tabs has helped (removed all the prop slip I suffered with the 14 x 19 Laser II but the biggest impact on the hole shot is defiantly the trim tabs. Thanks for all you advice and enjoy your boats this year as I am sure I will