Hopalong rhymes with:
hindelong, adlong, dulong, herlong, hindelong, oblong, oolong, adlong, berrong, bogelsong, boipatong, bushong, deshong, diphthong, dishong, dulong, ewong, foglesong, ganong, groshong, haifong, hartong, herlong, hindelong, hongkong, nifong, oblong, oolong, pingpong, shiong, susong, vogelsong, wilfong, wiltfong, wysong
Hopalong sounds like:
hobbling, hoefling, hopefulness