Yeah, I've heard a lot of people saying Roboworms is their go to. I guess im using the wrong bait. I typically go to a Zoom Trick worm, or Biospawn Plasma Tail.
Robo worms are good but I have done equally as well with other finesse worms and they hold up better than the robo's.
You should also try a wacky rigged 5 inch senko type bait in that pond and see what happens.