Hey guys, lately I have been noticing some erratic speed reading while at trolling speeds with my 898... It will read anywhere from .5mph-3mph and just flashing random numbers in between... I know my speed isn't fluctuating that much because I have I-pilot and its speed is staying consistent... I was thinking GPS puck placement as I have it mounted on the dash under my windshield on my Pro-V, but it just recently started doing this, worked good up until the last few outings... It also doesn't seem to effect my top speed readings very much if any, I see maybe the odd .2mph jump in either direction but that is probably just speed changes due to water conditions etc... Anybody else having this problem???