I am an avid reader of Nightskyhunter. Martin is a fine observer of all things atmospheric and astronomical. I particularly check his updates for both NLC's, aurorae and funnel clouds. I'm not sure whether he frequents this board, but he is a great ambassador for our interest. You're right, perhaps I could produce some chart for contrails like he has done for NLC's. I'll have a think about that one.
RIP Benson. Tremendous dog!