When I hunt I use a bipod extended to sitting/kneeling height, or sometimes offhand with whatever rest is handy. I was trained to practice the way I'll be applying it. I'm not a benchrest shooter, so I don't really need a benchrest and don't need to practice off a benchrest. I'm a hunter, so if I need to zero a setup at the range I might use a sandbag and bipod off a bench at first - but just to tune in if there is a lot of work to do. Afterwards, all my practice and grouping is done off the bipod - sitting on the ground or in a similar position - not involving a bench, bag or a mechanical rest. As long as you can find an anchored and repeatable position that's comfortable for you, it's all good and you'll be better off applying it when it counts.
Recoil mitigation seems to be the main reason I see most guys at the range using led sleds. I was taught that if I need recoil mitigation to practice then I'm probably over-gunned. If it's my only choice (like, say, if I'm hunting a tyrannosaur in Mozambique and need a supermagnum BFR) then I'll work on getting comfortable with it, or make the rifle heavier, etc. However, I don't hunt in Mozambique so I prefer to just shoot what I'm comfortable, confident and capable with, and do it the way I'll be using it.
Just my 2 cents. Your mileage may vary.
Cheers
Rich