When I had my Aeronca 11CC with no radio, a guy in a low wing Piper
tried to mid air me twice while in the pattern, with me observing him
while making my evasive manuevers.

Scott,
The encounter you had with the Piper driver is the poster child for
midair collisions in the pattern, high wing Aeronca can't see well
above and low wing Piper can't see well
below...............................Did the thought occur to you after
your discussion with the guy who didn't see you that your life might
just be worth investing in a $200 hand held radio?
JJ