Is a windvane possible with an arch and davits

[JMK]

Maybe somebody has already done this, but is there a way to have a windvane autopilot on a boat with an arch/dinghy davits? Trying to plan for options. Our boat has an autopilot, but for offshore use it would be nice to have a windvane set-up. The dinghy would be on the foredeck for those legs, but how to set up a windvane and with whose gear (Monitor or Hydrovane) perplexes me.

Thanks,
J.M.