Thinking about a rotatable dipole for 75/80 meters.I could put it up at 85-90 feet.Worth the trouble at that height?I have Rohn 45 tower with about 12 square feet of antenna load on it now (4 times 432-13wla).So I can't get too crazy.Force 12,M2 what is the ideas out there.Will use it mostly to chase dx,as much as only 85 feet will do. Gregg K9KL