Fred,
Here is a simple way to add a tail wheel/skid to a 1/2" thick profile fuselage without
cutting into the side of the fuselage.
It's a little tricky to drill the hole in the fuselage, and also to drill the small hole through
the length of the dowel, however neither hole needs to be too precise.
Bend the wheel mount and the stooge loop first, push the wire through the 1/4" dowel,
then make a 90 degree bend in the wire and epoxy it into a small notch in the dowel so
that it won't change alignment, then epoxy the whole assembly into the bottom of the
fuselage.
One bonus of this style, is that it does provide a strong mount for the stooge cable.
Cheers.
Warren Wagner