Hobbyist rhymes with:
cheesiest, costliest, creamiest, depriest, dupriest, greediest, healthiest, holiest, neediest, priciest, savviest, shakiest, stormiest
Hobbyist sounds like:
habicht, hapgood, happiest, heaviest, heavyset, heavyweight, hip-pocket, hippest, hobgood, hofstad, hopgood