Motorola Atrix 2 :: Persistence Of Vibrations And Notifications?

I prefer to use to ring tones and rely on vibrate mode, but the native vibrate is so short and weak that I miss it most of the time. I have tried a doze apps that are suppose to let you customize vibrations and the like. I can get none of them to work. The best I an hope for is that my original vibrate still works (the stock "2 short vibrates"). In many cases installing the app disables the vibrate mode alltogether. I have read some things about turning off the "stock" vibrate, etc. but those instructions are very unclear and I haven't found a way to make it work. I'm frankly shocked at the lack of "built in" customization of notifications. But even if I need to get an app to do it, how in the world can I make that app work. My old benighted Blackberry was better at notifying me.