I have a 788 DI. The sonar works ok but when going across the lake, the map will never keep up. I have all the new updates and still have the problem. I mounted it on my ATV for using it as a GPS with a lakemaster chip and have the same problem if I go faster than about 12 mph.
According to Humminbird customer service there is just so much information on a lakemaster chip the unit can’t keep up. They recommended getting a Navionics chip and trying that. I told them as long as I am at it maybe I should try a new Lowrance and see if it can read the chip I already have. For the cost of the chips I really hate just buying them to see if it will work or not.
The part that really gets me is that I started out with a 597. They told me the cause of that one not keeping up was because the microprocessor in the 597 wasn’t fast enough (sounds pretty good eh?) I was told the 788 was a totally different animal.
I like the unit but am disappointed with what I outlined. Has anyone else had this problem or am I the lone man on the proverbial raft?
Frankly I have had enough talking to the customer service people. The are friendly and always answer the phone, but basically they follow a canned script and it gets to the point you feel you are dealing with profesional tongue wrestlers.
WS
