I had brakes installed on my 6 x 12 back in 2001 and am glad that I did. The brakes, controller and installation cost me $340. At present I pull two mowers weighing around 2800 lbs. total.
Hustler Super Z 60 - Dixie Chopper XWD3500-60 - Wright Stander X - Echo SRM 2100SB - Echo PAS-260
Echo PB-650T - Echo PB-770T - Echo HC-1500 - Shindaiwa T2500 - Shindaiwa PB270 - Shindaiwa PS344