Matt, Ronnie is listed as being 5'11"--how tall would you say Bob is?
5'11.
At the 2007 Olympia my friend who is 5'11.5" walked by Bob when Bob was in dress shoes and my friend was in sandals. My friend appeared to be a little taller than Bob.
Bob had claimed six feet for many years which is possible as he could have been around there but Bob said that due to back problems [and if I recall correctly, surgery], he has lost some height. At the time of the day I walked by Bob, I was around 5'9 exactly and Bob is definitely taller than I am. I can't see Bob being shorter than 5'10 but I can't see him being much taller than 5'11. Bob was also a little leaner this year than his normal although not as lean as he was I believe in 2008 or 2009 when he showed up clearly looking much leaner than usual. Bob is easily over 250 pounds.
Bob has claimed that Dennis Wolf is taller than him and I think Dennis is basically the yardstick for 6'0. So that might tell you that Bob is somewhere around 5'11. This means his claims of being 6'0 before are most likely true as people do lose height after having back problems.
Ronnie is probably 5'10 to 5'10.5, although being bald might make him look shorter than he is. Also, I couldn't tell you if being so heavy affects posture but I suppose that's possible too.