Residential shade sail installation?

I want to install a shade sail on our patio. I know where to buy the shade sails as they are available everywhere it seems, but I cannot install it myself. I know a post or two would need to be installed for it and the anchoring of the sail and everything is beyond what I am capable of. I need a pro to install it for me but I cannot for the life of me find any company that will install just one shade sail for a home.. they all want bigger commercial jobs and if I did have them do it would cost a TON. Anyone know of anyone or a company that would be able to do such a project?