Coastal flights are great, and for VFR often my first choice. For the first 18 months on xbox I flew mainly VFR and most often coastal or island routes.
One advantage is it makes navigation very easy!
For the last 6 months on PC I mainly fly the Fenix A320 but still many of my destinations are coastal or islands, or I at least fly coast for part of the route.
Yesterday I flew my vision jet on a local route and one of my favourites, from the excellent freeware YKSC along the coast to the also excellent freeware YADG (although I paid for this one on marketplace back when I used xbox).
I’ve started several coastal circumnavigations around countries but I never seem to finish them. 