Where do you launch in Pwllheli ? I was boating there in August 2003 and kept the boat at the Marina, the slipway there is very good. The only problem that we had was the weather was awful even though the summer overall was good, it has meant I still trust the weather down South more than Wales.
I see you live in the same County as me and obviously have a good distance to trail the boat before the enjoyment can begin!!