The museum folks have plenty of money, so Wilsey can raise, say, $200,000. Then she can split it in half — she gets $100,000, and the road-closure activists get $100,000. No outside, "independent" expenditures (they can control their side, and we can control ours), no tricks, no bullshit. Level playing field, fair election — and let’s see who can walk more precincts and turn out more people on election day. That same model would work for all kinds of civic disputes.
PS: As an in-line skater with plenty of bruises to prove it, I have another suggestion: For even-more-healthy Saturdays, maybe they could resurface the roads. SFBG