I went with FourTreks Hi-Lift Mounts and Tool Mounts, i only have the Hi-lift on currently, but plan to put on the Tool mount this next week. I'll take better pics close up of the mounts later and post. If you use the link below you will see a better pic.
I had the high lift and shovel mounts that yakima makes from a yakima basket that I had before I got the ARB. I mounted the high lift mount on the bottom bar near the front of the rack. So the high lift sits perpendicular to the actual rack. It works great. Before that I had it on the pasenger side. The shovel mount is on the drivers side. My high lift is the 48" extreme. I will try to get some pics if you want some