I use net wrap too. But my spikes are shorter and don't rip the net off. When I said you need a 4-wheel drive it's for mud and slick conditions. I love mine my farms are about 3mi apart and it's a long cold ride on a tractor.
Yes there is one you pull behind a pickup. I have one it's called a Hay Dolly, other names are tumble bug, hay mover.I really like mine
you need a 4-wheel drive for it.lwww.ccmachinery.com/hay.htm]