Ahem Mr Ron Don. I have owned side finding humminbirds since they first came out. Right now I own the 987 C , 997 C and the 797C. The 987C is mounted on my 13' skiff the other two are in my 16' starcraft.I won't go on the water without one now. Fought with myself for a long time before I bought the first one. They do make a heck of a difference in the way you fish.
No matter how well you know your favorite lake these units will show you something you did not know. If some certain jig maker that I order from was really set on one he might be able to pry the 987C off of me for some jigheads and quite a few dollars. But still better deal than can find elsewhere.
But will get a 7 inch screen instead of 5 inch screen. The 987 does the SI , DI and 2D. If interested this certain Jig maker could PM for specifics. In fact give me your phone no# in PM and I will wax poetic on the virtues of these machines.
Now before anyone asks yes you can get skunked with these machines I have done that already. But I must say my fishless days are fewer and further between. These take a little longer learning curve to make them work for you. But the time .effort and money is a good investment.
I don't want to reveal this jigmakers name but his intials are RONDON lol