The ornamental design for a resilient swingtrainer, as shown and described.
FIG. 1 is a perspective view of a resilient swing trainer showing my new design;
FIG. 2 is a front elevational view of the resilient swing trainer, the front and back being mirror images of one another;
FIG. 3 is a left side elevational view of the resilient swing trainer;
FIG. 4 is a right side elevational view of the resilient swing trainer;
FIG. 5 is a top view of the resilient swing trainer;
FIG. 6 is a bottom view of the resilient swing trainer; and,
FIG. 7 is a perspective view of the resilient swing trainer, whereby the broken lines representing the individual, bat, ball, and batting tee are shown for environmental purposes only and form no part of the claimed design.