TripSailor's map location selector got a major overhaul. It now features an address lookup as well as an easy-to-use latitude/longitude selector.
You can now start a new sailing trip journal by just entering the street address of your starting marina or habour. We already have many marinas in our database. A lookup for e.g. "Lymington Marina" gives you the right location. Not every point of your route will have a street address. Just drag the red pin to the right location and drop it there. You can switch to Lat/Long mode to display the coordinates of the point.