Has anyone had any experience with a mobile Wi Fi antenna known as iAntenna300? It apparently picks up hot spots enroute, which the user can then stop and tap into. I travel a couple of times a year for a month or so at a time and need to keep in e-mail contact for business reasons but do not want to put a full-fledged $6000 roof mount antenna on my Souothwind Class A. I feel it would also be limited because it needs open sky. Also I don't stay long enough in one place to set up a tripod dish, nor do I want to carry all that equipment. This iAntenna300 is supposed to pick up signals while in motion. I would welcome comments. Is it worth the cost? Is it effective? Thanks.