Best way for me has always been to bag all lat/front/rear raises and work on becoming a better presser. If you take a year and add 50-100lbs to your incline press and overhead press, your shoulders have no choice but to grow, provided you eat enough. Dips are really good shoulder developers. Don't worry about any particular scheme, just pick a constant set/rep range and hit all your sets and reps every week while gradually adding weight.....5lbs a week adds up.