Cresting rhymes with:
breasting, resting, wresting, arresting, attesting, besting, breasting, contesting, digesting, divesting, ingesting, investing, kesting, molesting, nesting, protesting, reinvesting, requesting, resting, retesting, suggesting, testing, vesting, wresting
Cresting sounds like:
carstens, cherrystones, christening, christianize, christians, christine's, christman's, christmas, christmas', christmases, correcting, corrections, correctness, crackdowns, cristiani's, crocheting, crookedness, crusading