Posts: 1460
Location: Kronenwetter, WI | I run 1100 series and would say screen size selection would be most dependent upon what you intend to do with the unit. If you are planning to use it to follow countour lines WHILE FISHING, then by all means GO BIG. The added size is more than worth it.
Since it sounds like you are planning to use it to 'run to spots' from the console as well, you might consider this will mean the transducer will have a rear placement. When you are actually working a spot, the sounder reading will be X feet behind where you are casting from since the transducer is on the transom.
I'm guessing you are on a limited budget since you referenced dual-purposing the unit, so one solution would be to get an inexpensive sounder/gps for the console and place the transducer for the big unit on your TM. On the console I use my old Garmin 178 color GPS/sounder. I can run to any spot with it just fine, then I drop the TM with the transducer for the 1100 series HB and begin watching my big unit and make boat position adjustments. Small for console and big up front is more accurate up front. It is also cheaper than two big units.
Edited by Cowboyhannah 1/7/2014 3:34 PM
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