I can't give much of an opinion on spot lock or any other features with mine as I just got it back from the shop. What I can say, is that if you mount the TM, put it in the water, and the VERY FIRST TIME you hit the button it makes a grinding noise because the magnets inside the lower unit are broken, Motorguide WILL NOT warranty the product. Something to do with it most likely hit a tree or obstruction under water... again, the trolling motor was brand new, never used, and the very first time I hit the button there was an awful grinding noise.....