Yes, you can weld or bolt the BOA WINCH, C frame model, to your trailer if you prefer not to use a track. We have a bolt pattern available in the support section of our website. Do not hesitate to contact us if you have any question at info@boawinch.com. 75 ft-lbs thigthening torque. 1⁄2″ grade 8 bolt with washer and lock nut. The 1-11/16″ rating is relative depending on the needs of the installation and could be centered on the frame or a little more towards the side of the frame.