ok - i have some info this is not complete and bean counter nit picker types need not continue as these numbers are possibly capricious and arbitrary, also not yet complete. As I am beginning to rebuild the spreadsheet, I picked 20 sets out of my day planner/scraps of calendars,etc. At this point, I did not factor which grades of gas gave what mpg. Nor what I was pulling at the time-I have the info, just haven't rebuilt a relational data base from which to easily yank the info.
After about 11,140.3 miles on PC & 40ish hours on generator, mpg goes betwixt 5.6 to 9.8 with most appearing 8.1 to 8.8. I do not know how much gas was in PC when we picked her up she had about 70 miles on her & i bought gas 30/40 miles later - no, i'm not sure where the receiptie thingy is & I'm not prepared to admit 'tis lost. So, my info starts around 370.9 miles.
We have hung 900ish pounds of Piaggio off the transom (Stuart asked with straight face if I thought it would make it to Florida)(and back), pulled 1000 lbs of Piaggio & trailer around the NE (that was special around Boston), towed the tri-toon to Apostle Islands (I think Aimee put that pic on the web page).
The ride while towing the tri-toon was still very comfortable, acceleration tended to be a bit sluggish
actually better than I thought it would be.
I think of this at random times and that is to log the hours of the generator at each gas fill so how its usage affects mpg can be noted.