For GTs, I have not had much luck with the Doggies.  It could be I am working them wrong.  I find that they corkscrew when even moderate speed is put on them.  I would be interested in what techniques anyone uses for the Doggie.  On the other hand the wideglide and the rover have worked rather well.  The wideglide swims really well even at speed.  I am going to try mine trolling one of these days.  The Rover was a pain in the arse to figure out.  I got one for Christmas from my son and figured I had to fish it.  I tested it at home and I did not like the way it worked.  I took it out one day and tried to use it as a stickbait and saw nothing.  Then one time I ripped it in and the lure started chopping at the surface as I bounced the rod tip.  It sent a bunch of water flying and got hit for the first time.  I have continued this method and have had clients use it and it continues to be real productive.  Needless to say, I no longer have that lure, as a tank came and stole it.