Years ago I was taught that you could submit an IFR plan and on any particular leg, if you wanted to, you could in the remarks on the right of the plan nominate VFR for that leg, thus fly a VFR leg on an IFR plan. Dd it many times, especially on a last short leg to get home. Not that hard really. Or you could, in flight, just cancel IFR and fly the last bit visual. Again not hard.