Cell Phone Signal Boosters

If not weBoost, any other recommendations?

I leave the little antenna that comes with the weboost on the TV and use the booster in the car when not towing, I think the slim has been replaced by the drive sleek. Should work the same, but probably uses a different connector to the coax. Whole thing is going to be about $300-350. You don't need the fancy RV version, just put a phone in the weboost cradle and use it as a wifi hotspot for any other devices you have. You can make wifi calls from a second phone so no need to swap them. 

For the sake of simplicity, I was going to mount the omni-directional antenna on the upper side of the trailer above the roof line.  I spoke to a someone at Wilson and they said that there must be a minimum of 2' separation between each of the 3 major components [exterior antenna, amplifier, and interior antenna].  The price difference between the RV version and putting one together from different components is about $100, making the simplicity of the kit more attractive.  But I'm concerned that the antenna will not be high enough and I really don't want to mess with antenna poles or a permanent mounting that makes clearance an issue for the trailer.  I think it's back to the drawing board time.