TeriAnn,
The hi-lift hardly ever gets muddy on the brushguard. It's up much to high for that. If it were getting muddy, the whole radiator, winch, etc would be too. The bumper is going to get hit before the hi-lift does. I've never come close to hitting the hi-lift on the front of the truck. A branch here or there, but nothing I've ever worried about (if I did, I'd use limb risers). I've had it up there for years and can confidently say it is a great place for the hi-lift.
I tried it on the roofrack and it got caught up on a tree, bent my old roofrack, and put a dent in the roof.
There isn't anyplace to put it on the back of a Disco like on a Series/Defender unless you build a custom swingout.
Craig