Nuvi 350 and Trip Profile

I know that some of the other models of Garmin GPS receivers will let you save the profile (lat,lon,ele) for a trip, but my nuvi 350 doesn't seem to have that feature. Does anyone know of a way to get the nuvi 350 to do that? I've noticed that there are a lot of tricks that are undocumented and it seems like this should be available some how, for example commanding the unit to save a custom POI periodically on a calculated route.

-Thanks