The pole feeder...

Has anyone used it and had success,im interested,ive watched a few vids and it looks the perfect method in our rivers conditions...

You might have stumbled on this video already, but if you haven't....

YouTube

I have used open end, method and maggot feeders on both commercials when it's been too windy to keep a float steady against far side rushes, also have a feeder rig set up on a topkit when I fish a canal that really pulls through when lock gates are opened . The way I do it is put feeder on after putting suitable float on the line, the float is purely for a marker, it can be set either dead depth or over depth depending on conditions.