Winch on a sled

[pollenface]

The front/rear tow hitch concept as @Garret Mate kindly mentioned has been around for a long time @pollenface Mate.

Many times seen them I have

It’s biggest downfall in the day was the physical weight of steel cable on a say pissy 8,000lb electric that would destroy a retirees back heaving it around from storage onboard to locations front and or rear.
Dyneema rope will surely assist your marketing plans and I believe you may be onto something with a ‘bridle’ type sling connection to rated points as many modern tourers would be near impossible to legalise a Hayman Reese type steel hitch afront within the technology advanced bullbars.
FWIW: I could personally see the benefits too of a portable sling type connection to the rear of campers/vans whom have ventured too far down a track if that makes sense?

Perfect sense to me MB mate ;P

PS. a shunty is basically just a low value resistor, a coulomb-meter measures this value to calculate current, I have a 500a/75mv shunty on my offgrid solar system, y62s are okay