Sometimes if the tow boat is smaller/under powered towing from the mast step facilitates steering.. it allows your boat to pivot and have more effective control on the direction you're going.
Towing a heavy cruiser with an outboard equipped tender is best done in reverse (ie tow from the bow) for short distance/inside marina work, or strap the boat along the tow-ee's quarter, and, well-fendered, 'push' the bigger boat around.
We once got our 16,000 lb 40 footer headed home with a 8 foot inflatable and 5 HP Nissan strapped alongside until the wind picked up. We could manage about 2-3 knots in calm conditions.
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)