Here's what rhymes with hydrocole.
coal goal kohl whole role soul hole pole roll sole bowl fol mole poll toll knoll shoal dole foal bole boll thole vole tole dolour skoal stole parole scroll droll cajole troll prole rissole patrol stroll enroll casserole extol vacuole petiole unroll bedroll condole oriole maypole extoll beanpole control glycerol systole camisole cubbyhole innersole quadrupole arteriole buttonhole pigeonhole profiterole decontrol