Gene, I went out again yesterday with my new I-pilot, HB 788 & 898..

This is just my opinion::::

For the way you & I fish, docks & brush piles, I see no need for SI or a Terrova TM with I-pilot...I, along with help from HB, have been fighting the interference problem and have it partially solved with the exception of the 800 kHz frequency for SI..

If I had it to do over I would buy a MK Maxxum TM like I had before the Terrova and a large screen HB 2D, DI DF...I saw yesterday that I was spending waaaaay too much time fooling around with electronics..

I would thoroughly check out the SI with someone that has one before making a purchase..

Like I said, this is my opinion and I don't fault anyone who has SI and are enjoying it..(Tap, Corker, etc)

PS:: you & Ron were dead on with your I-pilot test when you were in PA...Mine drifted a good 18' several times before correcting & this was with maximum reception shown on the remote..It did however give me time to throw out a buoy marker and anchors...