Saturn tow vehicle

I tow a Saturn and I have had transmission problems with my Saturn. Last time burned out tranny while towing. I was advised to purchase tow dolly and tow Saturn back wheels on ground. I ran into a fellow who tows a Suzuki and he stops every 200 miles and starts up his car and runs it for 2 minutes. He has never had a problem. My question is could that be a solution for me to put my Saturn back 4 wheels down and get the tow dolly sold?
Actually have had 3 different tranny problems with my Saturn. Costs of fixing are high. Am thinking of traveling without a tow car.