The ornamental design for a flail apparatus for delimbing and debarking, as shown.
FIG. 1 is a front elevational view of a flail apparatus for delimbing and
debarking, showing my new design;
FIG. 2 is a right side elevational view thereof;
FIG. 3 is a left side elevational view thereof;
FIG. 4 is a rear elevational view thereof, the broken lines showing an
engine are for illustrative purposes only and form no part of the claimed
design;