-Did you know the GPS signal is only accurate within a few feet and if the Ultrex thought it was out of position it would run to try and correct?

Have bought and used or tried to use 2 versions of new Minn Kota Ultrex TM over past 4 weeks. First unit never stayed in lock spot/anchor mode either sitting still on the drive way or with both
Talons down on the water. Unit would go into search mode with head swinging 170 degrees either to the R or L and then shut down within 5 seconds. Unit might stay in anchor mode for 10-30 seconds, never longer. Talked with 2 different M K tech support agents. Described how it was acting and both immediately blamed it on low voltage. Dual Interstate batteries, 6 months old, never sit more than 8 hours till charged. Tested with 10 sec x 130 amp load, tested good. With fully charged (25.6 volts with float charge) Ultrex would not stay in anchor mode sitting on trailer. Spent 30 minutes with one tech attempting to show how the trouble shooting described was illogical. At no time did agents describe how the unit works, see below. Gave up and returned unit for full refund.
Second unit will not work with Fortrex mount, so had to install the Ultrex mount with the 4 alignment holes. Watched U tube video of a earlier version of the iPilot. Had one person in group who use earlier version and both said theirs worked differently. The second unit works but with serious constraints. 1. It anchors if going directly into the wind (probably current also). Say wind is from 180 degrees, it will lock with heading between 170-190 degrees. 2. It will not anchor sitting in driveway or with both Talons down and boat not moving. Within 10-30 seconds it goes into search mode with head swinging 170 degrees to R or L and then shuts anchor mode off. 3. It will not stay anchored with any side force, such as a boat wake from the side. 4. It will not stay anchored with swirling winds such as near trees in a cove. 5. It will not anchor if moves more than 2 feet forward after anchor function is turned on, contrary to the earlier versions it will not back track to get on spot.
Tech support was told most of this and never mentioned was unit going directly into wind and dead still. IMHO or not so H, the 2 tech support agents I talked to do not know the product.
Asked Minn Kota to put me in touch with project engineer or manager. Its been a week, no response.
As with 12 ft Talons the customers do the field testing. Have not tried the other functions with second unit, main use is dead still in water deeper than 10 ft where Talons don�t work. With Talons one can go into full stealth mode, electronics off or on standby, no noise, often yields multiple LMB from one set (spot). The 12 ft Talons after 2 were updated or replaced by MK are working great. Hopefully a software update with changes to the spot algorithm will make the Ultrex a bit easier to use. With lower back issues, I like the power steering feature.

This might be a duplicate post, the first attempt disappeared in review mode.

Dr. Juice, thanks for offer. See original post, both batteries checked with commercial battery tester, 130 amps for 10 seconds. It will lock up on lake if headed directly into wind. Note the advertisement says new improved software for the Ultrex. Agree with your experience, Talons are great (best shallow water anchor choice for stealth fishing) but useless in deep water, by design. Earlier models of spotlock work differently than what the Ultrex have done, fished past 2 weeks with anglers who have earlier versions.

Actually applying spotlock on the driveway is not a good test. Spotlock works on a GPS signal and the best you can possibly get us give or take 6 foot. So your motor will constantly search for the spot.
For this same reason spot lock does not hold a boat perfectly still on a spot. Even if there is zero wind it will search for an exact coordinate. The old spot lick would keep a boat wishing 15 foot of the spot the new one in around 8 foot.
There in not any way a trolling motor or any motor can hold perfectly still on a coordinate.