A Garmin PS30 transducer might be a good option, I believe it has a 120 degree cone and provides live (albeit "blobs") images. Videos available on youtube.
...same here, third-generation trolling rigs and pulling copper, the routine since I was 5 on Cayuga (now I mostly jig), but definitely great memories!
I really enjoy using my Garmin, very user-friendly. I once added a Panoptix PS30 transducer for lake trout jigging, but find that traditional 2D honestly works plenty well enough to find fish and easily view the jig. I use a GT15 transducer.
Teasing a school of perch in the top pic, stack of lake trout in the other...