Just don't buy depends, go to wal mart and get some assurance, there
cheap, about 9 bucks for 20. And get a pack of tena guards, they come in different absorbancys, look on the side of the pack and get the ones with the greatest absorbancy.
The guards come in different size packages, just buy what you can afford the more in the pack the cheaper they are per unit.
When you use the guards put them as far to the front as you can, because when you sit you don't want to put alot of pressuere on them they will case the diaper to flood when you sit, if there too far back.
Make sure you poke alot of holes in the back of the guard so it will drain into the diaper, this is a good combination, I use it myself, if you add more guards it really dosent help, one will be good.
And the assurance is plastic backed a decent cheap diaper with lousy tapes, so use duct tape over the tapes just a small peice will do.