OK I picked this topic after reading through the 'flying to hamvention''
thread. Being a non-instrument rated private pilot, not sure what
constitutes a 'legal' alternate airport. If VFR, weather minimums must be
met just to get there. If IFR, I assume there is visibility minimum
(decision height?) that could cause a plane to not be able to land using ILS
or whatever. So what is the process for choosing an alternate?