We've got an articulating boom mower for the skidsteer that's similar to the Lane Shark. Thing is handy when you need it but doesn't get used as much as I thought. It has three 10-12" blades mounted on a carrier that's probably 1" thick and 48" around. The mower boom swipes from front mow to 90* side mow and the deck goes from 90* up to maybe -30* down for pool banks or ditches. We mostly use a 72" front mower with the skid. It'll do 2-3" material but doesn't really like it. Our bushhog is a really heavy 15'. Our 100 hp tractor handles it fine but it'll work it. Personally I wouldn't want anything smaller than a 12' flexing for pasture mowing. A 75 hp will handle them just fine.