MUP hatred annoys me. I use the Burke Gilman trail as part of my commute and my work/training route wouldn't be possible without it.
The problem sounds like a particular person or organization. Simply stop, use your camera phone to snap pictures of the chaos, and report it. Do it every time and keep all the images together and submit then entire bunch with each subsequent report.
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My stable:
2013 Redline Conquest CX
2010 EasyRacer GRR
2015 Cruzbike Vendetta
2009 Raptobike Lowracer #0067
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