My recommendation is to start by checking Eros, if you haven’t already. Another board is TOB. Unfortunately Eros will no longer allow links to escort websites. So you’ll have to google the phone # or name to get the website.  Many Denver escorts will do outcall to Vail with an extended appointment.  Once you have a name or two, check to see if they’re on twitter.  It’s become popular with many providers. Good luck.