I have one of each, a MK & a MotorGuude. The MotorGuude is dead on ! The MK is a piece of hi priced junk compared to it. Have both linked to Lowrance Hds gen 2s. MG on a 22 ft Xpress, MK on a 17 Tracker. The MK wanders 20 to 30 ft & over runs spot. It cranks up sometimes at 100% which will throw you down or overboard. I don't use spot lock much on account of that. Use the MG in the full current of Miss River, 7 mph, & it HOLDS.
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