Warn makes a very nice interrupter kit with a continuous duty solenoid that I have used in the past. I need to add one to the 73.
About 20 years go, I witnessed the solenoids on a Warn 9,000 point winch stick in the in position while on a hard pull. The pandemonium that ensued brings a laugh now, but it was serious chit then. Almost had a couple of folks seriously hurt and only quick work with a pair of bolt cutters on the power lead averted disaster. The remote solenoid is a great way positively shut off the power to the winch.