I have a new HDS 7 with StructureScan also. Most of the time I find myself wishing I had my old Lowrance LCX-15M back on my boat. I agree with you, us feeble minded people will be lost with it. I was out on the lake this morning with a "young" man who I paid 20 bucks an hour to tutor me. I was amazed at what he could do with it. He is making me up some cheat sheets which I hope will be more helpful than the instruction book that came with the unit. If and old timer like me were to ask if I would recommend an HDS 7 I would only tell him yes if he says he still has an excellent memory.
Roy
Warner Robins, GA
478-923-9092