Doctor Sonar has released the Devils Lake East side scan map chip to compliment the Devils Lake West map chip released last fall. The is basically a side scan map of rocks and boulders so you can study it on your Lowrance at home to find the biggest boulders and rock piles. Doc was amazed at all the boulders he found and wishes he knew about them for his Devils Lake tournaments since Devils Lake walleyes like rocks and the big walleyes like the biggest boulders.

The map chip only plays in Lowrance and the files are large so Doc recommends not using them in Elite HDI/Chirp, Hook, or HDS Gen 1 because of the units limited maximum resolution.  They don’t work in Hook2 models. The HDS Live, Elite Ti2, Carbon and HDS Gen 2 & 3 show the rocks in detail.

The map only works in Lowrance, we have tried working with other brands but failed.

More info at