Didn't think about trying it with the TM. I haven't used it enough recently to know if it started with the new transducer or if it happened when I switched boats. The TD is high enough that on a plane it wig's out. A question on marking waypoints also, the structure on the left at the end of the guardrail, if you were going to mark it would you just put the cursor at the base of the structure to mark and try to locate?