Powerbait sure does work
You can never have enough powerbait especially with the wide variety to colors and types..nuggets or the play dough kind as I call it. My favorite color is rainbow. I've also been mixing colors lately, take some orange and add some green, just trying different variations and it does work. That does seem odd that you have never caught any fish using powerbait.
:think:Some things I've had to learn along the way are...the lighter the line you use, the better. I don't use line heavier than 4 pound test, if you go heavier it will probably cost you bites. Another thing to keep in mind is hook size, the smaller the hook the better. I usually go with size 8 or 10. But as someone else mentioned the fish will swallow these small hooks so catch and release is probably not an option in this case. Make sure the powerbait covers your hook completely, those trout are pretty dang smart and can detect the hooks. There are just so many factors that come into play when fishing..water temp, time of year, Fishing gear and tackle...it can be frustrating but keep on trying.
Where do you normally fish using powerbait?