We recently started Geocaching using a Lowrance iFinderGO2. Last Saturday and Sunday, the 27th and 28th of October we had extreme difficulty holding a position. During the course of several minutes we lost and then reacquired our position repeatedly. This occurred in open sky about a half hour before sunset until dark. After dark we did not have this problem. Is this a problem with the unit, or is there a disturbance with the satellite signals due to solar wind? I don't believe the latter is possible, but this happened at the same time of day both days. We had not noticed it previously on the last three weekends we have been out.