Per AnntennaWeb, I need at least an outdoor medium directional with amp (network stations) or large directional with amp (all local stations). So I can do about as well with the boost fully up on the rabbit ears I got in rural Arkansas (couldn’t find enough boost on the rabbit ears they sell in the city.)
If I drop FIOS and need more than an emergency solution, I’ll try an attic mount first.
Better to have more antenna (multi-element Yagi) than you need. Rabbit ears provide little gain.