Here is a method that I have been using for racking 1-gal. jugs. If you do not have a rubber bung that fits a 1-gal., then you will have to "fileone down" using a rasp file works great. Prior to doing this, you will need to drill the center hole a tad under 3/8" to accept a 3/8 piece of hose for your syphon. Drill another hole at least 1/8" away from the center hole. This size hole is 1/4" for your "blow hose." Install a bolt through the center hole of the bung, add a washer and nut to hold it in place to avoid the bung from spinning. Mount it to a hand drill. Spin the drill slowly and as you hold the file at the angle of the bung, it will shave the rubber down real easy. Check to see that the bung fits the 1-gal. and continue until it sits in real good.
The 1/4" hose can be obtained at your local Home Depot in the tubing section. It is of "food grade" and use also for ice maker feed hose which has to be "rigid." Install the bung on the gallon jug and insert the 1/4" rigid hose thru the center hole of the bung down to the bottom of the jug allowing approx.1/2" below the bottom of the bung where you will then install whatever length of 3/8" hose you need to rack to. The 1/4" fits nice and snug into the 3/8" hose. You mayhave to pre-moisten the two pieces to join easier. Next, cut a 4" piece of the 1/4" hose and insert it into the other hole leaving approx. 2" above the bung top. This is where you will install a piece of the 3/8" flex hose any length you need to "blow through." I have my set at 12" so that I need not blow hard.
Next, while your at the store, go to the nuts and bolts sectionand pickup your "bung bolt, 2 nuts and washers. Also, check out the "white nylon" screws section and find a screw to thread into the bottom of the 1/4" rigid hose that you inserted to the bottom of the gallon jar. This screw will be "your plug" for the end. If they do not have nylon screws, then you may use "stainless" (Make sure that it really is stainless!)
Now for your own choice of location, you will have to determine where to cut a "V" knotch on the side of the tube up beyond the lees that lie on the bottom of the jug. It is important not to cut to deep of a notch. All you need is a1/8" notch, not a deep one(I have notched mine to 1/2" from the tip of the screw.) This notch is where the wine will flow through above the lees. Notch slowly to avoid "cutting through the hose" or file it at angle if you are worried.
Now that you are done, try it out on a gal. jug filled with water. The purpose of the "rigid" 1/4" is that it will naturally curve to one corner of the jug and remain there to avoid dancing around disturbing the lees at the bottom. Although the syphon is small, it allows a smoother flow with less disturbance next to the bottom. It takes approx. 3-4 minutes to syphon a 1-gal. of course depending how high you place it above the jug your racking to. If you desire "not to blow" into the tube, then check out the "squeeze bulbs" that they sell for syphoning gas for your mower. I just blow "once" into the tube with light pressure and it willflow well. Good luck, and if the directions are not substancial, I will take photos and post each step. Aloha!