pushes the limbs over the cab and exhaust (sometimes integrated) you're driving through brush, tops, whatever. Can double as part of roll over and falling object protection.
tramp: the thing is that Astor probably costs as much as a descent used piece of conventional equip. And far less productive. Yes, moving costs, tract size, and "intangible" things like landowner preference, your preferences, and market differentiation, are somewhere invisible in the $/cord equation.
Sounds like you've found a balance in your system and much of any change will demand a significant increase in production. What that does for net profit is the question I guess.