The rest set up I use depends on the type of shooting I'd be planning for that rifle, but I NEVER use "sleds".

In general, I use an adjustable front rest (Ransom) and rear sandbag. Sometimes I'll just use the bi-pod on the rifle, or an X-bag (bulls bag) with a rear sand bag.

I don't like sleds, because it's an unnatural interface between me and my rifle. If I wanted a "mounted gun", I wouldn't use a shooters sled (Lead Sled), I'd use a real receiver mount, meant for long range precision shooting. The lead sled type rigs are generally more stable than your average shooter, but it doesn't tell me anything about how the rifle would shoot in my hands. Not just how it would group, but where it would POI. I've seen guys clamp down into a lead sled, zero, then take the rifle out and have the POI shift over an inch. I've also seen guys over weight their sleds and crack their stocks.

Good shooting is about letting the rifle shoot where it wants to shoot, and making sure it's pointed at what you want to hit. Sleds are a brute force method, that add too much pressure to the rifle itself.