Since I have been asked in pm about which accessories I use, here we go. This is for the 08 bars. I don't know if the 05-07 bars are different. I know that I do not have bars available from Thule, only Yakima this is not the case for the 05-07.
I use the Thule Big Mouth bike carrier, and the Stacker Kayak carrier.
The bike carrier uses square head bolts which I slide into my track and clip tight. The kayak carrier uses straps and bolts. I do not have adapters from Subaru, I have not found any that are made. I know that Subaru is now offering Thule accessories for the cars. I'm pretty sure I have the same Thule accessories that Subaru offers.
Here are pictures of both:
Any questions PM me. I'll be glad to help.