B7, what a neat tool, the 1000 lb. version reaches up to 63 ft. It sounds like the answer to your problem.
The Trim All attaches quickly and easily to your existing backhoe or trackhoe. It eliminates the need for specialized training or other, more expensive specialized machinery. OVERALL SPECS • Attaches in minutes • Can be used on multitude of machines • Cuts limbs up to 10-inches in diameter • Reach: up to 63 feet • Use at ground level on orchards, property lines, electrical and other right-of-ways • Support vehicle's hydraulic pumps drive the TrimAll and its components SAW BLADE • 24 inch circular blade with carbide tips • 72 or 80 tooth blade • Powered by a Parker Hydraulic saw motor • Operates at approximately 3200 rpms BOOM • Fiberglass, telescoping boom • 90 degree swing angle • 45 degree tilt • Non-conductive hoses • Dielectric testing to ANSI standards • Weight: Approximately 1,000 pounds SAFETY FEATURES • Limb deflector • Safety latch locks boom in up position when not in use • Protective window prevents limbs from entering cab Skid Steer Model 1 BOOM: Swing Angle Fixed Standard Length 13' Total Standard reach height with most skid steers 23' SAW BLADE: Fixed Specialty lengths or designs can be engineered.