List of my tow vehicles for DG-300 in fiberglass top Komet.
Towed to Washington State from Tennessee behind 1987 Volvo 240 wagon.
Other tow vehicles used:
1998 Subaru Outback Wagon
1993 Mitsubishi Montero
2008 Toyota Highlander
To/back from:Nevada (Air Sailing)
California (Montague)
Canada (Invermere)
Utah (Nephi)
Wenatchee (Pangborn) or Ephrata to Arlington for annuals many times
(over Stevens Pass: 4018ft/1225m or
Snoqualmie: 3022ft/921m and Blewett: 4100ft/1250m Passes)
All worked OK, across mountain passes, usually at 60-67 mph, except ALWAYS 57 mph on speedometer in California, etc., with acceptable gas mileage.
BTW, over 1000 mile RT, difference between 25 mph and 30 mph
is less than 7 gallons of petrol.
Better visibility and PIC feeling for me was in Montero or Highlander; but each of the above was fun and felt safe, and your feelings may vary.