This is two separate issues and they seem to be confused here.

First is the issue of the other field which you state is 3.5 miles from the club's field. According to the AMA 3 miles or more is considered adequate and there is no problem with people flying there. So they really don't effect your club and any talk of the need to make sure they have insurance is of no concern to your club and just sounds like people trying to assert control for the sake of their desire to be in control.

As for the way electric flyers feel when they come to your club's field, what has been done to make accomodations for the fastest growing segment of our hobby? As many have pointed out separate areas, runways and rules are being implemented around the country to take electrics into consideration.

One other point from your original post....what would be the harm in another electric only club forming at the other facility? It actually sounds like a good idea to have more than one flying site in town and if the electric site was organized it would probably reap benifits for the airport field as well.