Check out these racks:
http://www.GobiToyota.com/4runner.htm
I too have a yakima and it is easy to install and take off yourself. One nice thing about the yakima is that they make mounts for shovels and even a mount specifically for a HiLift.
And as BuckyBadger said, if you get the LW get the net for it as well. Makes it very easy to secure the load.
Here are some good yakima accessories:
http://www.yakima.com/racks/cargo/pr...retch-net.aspx
http://www.yakima.com/racks/cargo/pr...k-carrier.aspx
http://www.yakima.com/racks/cargo/pr...l-bracket.aspx