I tried doing that, but I was still doing applications that occasionally needed a count of flights not just hours, so I gave up and typed in every flight individually.

That said, my logbook software (logbook pro) has a specific way to enter in multi-leg trips as a single entry so it can't be that uncommon of a thing. It just didn't work for me trying to rationalize my logbook containing private pilot, military, and 121 flights for different applications that all wanted the hours and flights broken out differently.