The double action sicklebar mowers do not like fire ants, sticks & rocks. They must be used in pristine conditions. We have sold the double action G&S Superior mowers since the 1980's. They are higher maintenance than a drum mower. You can do $$$ hundreds damage in a second if you catch a rock or stick in the guards. The repairs on the double action mowers are time consuming & expensive. With the drum mower the blades are $1.25, only 6 and you can replace them all in 2 minutes. The drum mower will mow any crop as fast as you can ride.