Jay,
The same warning is on my site, it says a 16 is max, but I have a 17 8.
Having seen it, I am not the slightest bit concerned, it's simply a sharp angle. I may ask for a spotter on the drivers side, but I am sure there will be no shortage of volunteers.
You can also "Cheat" and approach from the wrong side. I don't know about Bullards, but most campgrounds are accomidating and will let you go the wrong way as long as you have someone in front of you to warn others.
Check with the park if you have to do this.
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