thanks again, you are a mine of information ! The test sail done by Yacht magazine is good news for me as it means that the boat can tack within a reasonable angle in a wind of 20 knots, the bad news, which I obviously already knew, is that I have got a problem to solve !
Your final suggestion is good and because you have followed my case in detail I would like to invite you. Indeed, I would welcome very much the opportunity to meet you in person and have you aboard. The boat is currently in La Coruna, Northern Atlantic Spain. If you would like to spend a few days in Spain this coming July when I will launch the boat again, you are very welcome.
If that appeals to you, please drop me a line on my e-mail: firstname.lastname@example.org
and in any case, thanks a lot for your help up to now.