In another post I created an impromptu guide to reinforcing diaper tapes. I'm not an easy guy to get a good fit on, and reinforcement not only keeps the tapes from popping off, it also keeps the diaper snug around my legs and waist. This is the method I currently use, with pictures, a nice, easy step-by-step guide.
1. I use clear duct tape mostly, especially on dips with patterns and decorations. It's virtually transparent and yet, stronger than packing tape. However, there's a bazillion different types of duct tape with patterns or licensed characters to choose from.
Most pieces I use are about 3-4" in length but can vary based on your needs.
2. After securing the diaper's tapes, begin with the lower area. See that flap that comes around from the back? Take a piece of tape about 4" long, and attach one end to that flap. You should have about 2" of tape sticking out. Pull that horizontally across the front of the diaper towards your crotch. It may overlap the diaper's original tape but that's okay. You should feel the leg hole snug right up. Don't pull it too tight- you're going for snug. You still want circulation and movement. It's just that sometimes, the lower tape just isn't positioned properly relative to your leg. Using the duct tape not only reinforces the lower tape and keeps it from popping (those are always the ones that go on me), but it helps cut down on leaks.
3. The upper tape is much the same. First, make sure the back flap is up as far as it will go, and then take the same size piece of tape and fasten it to that panel, leaving the same 2" exposed. Then, with thehand of the side you're taping (ex. right hand for the right side), hold the inner front flap still, suck in your stomach, and pull the exposed tape towards your navel area and secure. This greatly cuts down on slack around the waist, and you don't have to tape all the way across, thus saving tape.
4. Take a piece of tape and seal the gap between the upper and lower tapes. This won't affect fit but it will close off one more potential avenue of leakage.
5. Repeat for the opposite side, and behold your finished diaper that you will need the jaws of life to get off of you.
So, what works for everyone else?