In a defence of helicopters, I was alway's trained to hover taxi very low and at low speed, anything else is dangerous to us as well as other people.
One of the problems we do have though, is that quite a few airfields insist we taxi down the taxi way's and therefore sometimes pass quite close to other parked aircraft but I think most of us make every effort to keep away as much as possible, unfortunatly though a lot of airfields do share the pumps with fixed and rotary and we need lot of fuel!