Plenty of ss1000 usually followed by BB1500 and one or two 2000 miles in 40 hrs or so.I don`t do night riding,can see caps .
Never bothered with certificates,heck even my g/f who is not LD rider by any means has passed ss1000 or bb1500 trashhold couple of times due to some screw ups on my part.
Most of that was done on interstates,so I guess it is cheating

. I ride to see places,I`m not mileage oriented.
Miles in my case come by accident ( or lack of planning ), not by design.
To answer the quastion-one ride, one certificate.