They ought to go to SF. It would set the city back millions in costs. The delegates could all stay outside SF and all the male "models" would be without many gigs.
There are dozens of red state cities in which the GOP could hold their convention. Support those who support you...
I like your idea about all the delegates staying outside the city. There are plenty of hotels that can easily be reached by BART, and the city would not get the hotel tax.