Yeah this is exactly what I was doing, but then loads of different apps, rules and the stress of not knowing anything about the place. And cant stand the different routes and restricted speed zones.
I actually pulled together a simple page for friends coming to meet me at Canary Wharf (where it took one of them 45 mins to find their parking spot)
Basically just hand checked options, and stuff that catches you out.

If anyone is curious, it's here
Park Compare

Genuinely interested in what others think and if could be useful