I marked quite a few on the sounder, but like you it seemed like nothing I did could get them on the chew.... and believe me when I say I tried. No lure had more than 30 minutes out unless it had a hit, then it got some extra time, different depths, different distances behind the boat, different hook set ups., varied speed...It was a tough slog 🙂
I was contemplating a June trip but it is getting very cold so if I do come down it will be with the family and a car full of ski gear for a few days on the slopes.
Hope you get a few next time down. 🙂