On my 2010 I have the Thule 450 crossroads and 50" bars. With the 50" bars I can fit 2 longboards side by side, if I have my SUP on there I can fit it and my shortboard. Going to replace them with 58" bars to give me more room. I use pool noodles on the bars and along with some NRS straps. I have some dockslocks that I use to keep the SUP up there.
For yaks I have some Thule kayak stackers, which allow me to fit 2 kayaks up there along with a sup.