Hello, I hope you don't mind an intruder from another country. I found your forums while looking for some AL-KO trailer reviews and was amazed by the discussions here. There is a lot of useful information. I'm in the process of making plans for building a 2.5x7.2m THOW. Hoping to start in a month or so. Currently doing review of materials, making sure I understand the compromises between strength, weight, insulation, etc.
I have some more detailed questions I'd like to ask, but first I wanted to say hello and check if a foreigner, who doesn't even speak German, is welcome here. 
I'd completely understand if you want to keep this German-only.
I'm currently reading posts using Google Translate, but I guess writing using Google Translate would just mess up the language.