There is no one method that is the "right" one ,however there are certain things that hold true for all rigs......first of all the length from hook to swivel can be short or long ....as previously mentioned, the short will give you a longer cast which is sometimes necessary but usually the fish are much closer than you might guess
.......the longer leader will give you possibly better bait presentation and prevents the swivel (and bait) from being drawn up tight to the swivel when wind and current put a lot of force on your main line. If you are fishing conventional reels short is the way to go since the fish can pick up the bait and travel....i use spinners and prefer not to let the fish go anywhere with my bait, i want an instant hook set, so i vary my leader length depending on the casting distance required. Since i do not use a shock leader(not necessary using 50 lb braid) i then use enough leader to the final swivel to prevent line abrasion when a large fish is hooked..(if you are using shock leader do a search)....never use cheap sliders. In the rig pictured the beads protect the knots from the slider, most conventional guys don't need or use beads unless to prevent the sinker from sliding too far up their shock leader. Very few folks use braid in the surf and i do not recomend it especially for anyone learning surf fishing. If you are not
a powerful caster (me) you may not need a shock leader unless throwing 8 and bait.
Also remember keep hooks sharp, drag properly set, spikes well sunk, and check/change bait frequently.
......one of my earlist posts(2002 i think) i asked critter gitter what kind of rig he uses, over the years i have modified it to my fishing style...you may want to go back to 2002 posts and review that thread for more insite into what the experts use! good luck, put in your time and keep at it and eventually you will be successful! also remember the state record fish was caught only 50 yards from shore.........