I agree, that in the pictures you provided, were you to tow in that configuration, you would catch the chains on the shank in a turn.
But that's not how you will tow. When you insert and engage the WD bars, the coupler will be draw upward several inches, providing the clearance you need.
I've actually found that I can't easily attach my chains until after I engage the WDH bars for this very reason. Therefore, since you CAN attach your chains, you probably have more slack than I do.
This is also why I don't move thru the campground with the WD bars removed. Some people do this to avoid the somewhat subjectively-embarrassing creaking and groaning and popping. But my hitch will catch if I do this.
thebrakeman ('70), DW ('71), DD ('99), DD ('01), DD ('05)
2004 Surveyor SV261T (UltraLite Bunkhouse Hybrid)
2006 Mercury Mountaineer V8 AWD Premier
Equal-i-zer WDH (10k), Prodigy Brake Controller