yes springerhill you were in the right spot roughly.Yes the white markers are gas wells. 1 at 40ft. and another at 49ft.!! you can mark fish in that area from 35ft. to 49ft..the last time i was out,i found that the jumbo's were suspended anywhere from 28ft. to 36ft.,so the fish finder said!!!I did find that at 47ft.was the area where the baitfish schools were swarming the most due to the gas bubbling up as shown on my fishfinder.I also found that the bigger fish were hitting in the afternoon and it shut down around 10:30a.m. til early afternoon.Don't be afraid to move around a few hundred yards and get better results. All i ever use is pickeral rigs also,but I do change the hooks to mustads #6 and get a better hook set.The perch can rape your minnow before it even hits bottom!!!Hope this helps for your next outing,and you have another person with you(more rods means more fish) Tight lines Rob