No experience of an Avon Adventure, but I used to have a Yamaha 40hp 40v from 1995 that spent its life on a Princess motor yacht. Beautiful engine. Very reliable and robust.
You are where you are with the current Rib. Itís probably on a par with a Zodiac Pro 7-man in terms of hull design, so expect it to slap in short chop.
Enjoy the summer. I used to go out in all sorts of stuff from Rosehearty through to Portsoy. If you go out yourself, then get some weight up on the bow, anchor, sandbags, whatever, that will help.
The Moray Firth is fairly unforgiving. Weather is unpredictable, thatís a given, but then you have currents and of course wind. If you want something with a deep hull, then youíre looking at an Avon 4m if size is critical for storage or indeed tow weight.
Is that with or without VAT?