Mick, If your boom has reefing sheaves at the aft end, or if you choose to place a block there to serve the same purpose, it is important that a pad eye, or eye-strap, that is used to dead end the reefing line be placed directly below the reefing cringle on the boom. This gives you an EFFECTIVE angle of pull half way between "down" and "back." Pulling the sail down to the boom only by pulling back places way too much tension on the cringe and could result in it eventually pulling out (tearing). Of course, a 2nd reef requires an eye-strap forward of the 1st one to accomplish the same thing. This method just takes care of the leech, of course. If reefing lines for the luff are led to the cockpit, then the whole operation can be handled from there - an arrangement I like better than doing it all at the mast as with most jiffy-reefing or single line reefing set-ups.
Using the lines for the luff eliminates the need to use a reefing hook at the gooseneck, although you might prefer to. Lots of ways to accomplish these things. You just need to decide what is comfortable for YOU.