No idea how long my one records for but once there are too many squiggles everywhere i delete it. Prob delete it every 3 or 4th trip i spose. Depends if im going to the same spots really, if im going back a spot then ill delete so i can see that days drift line.

 Cheers Bluedog I also delete mine and understand that it overwrites when the memory is full if you dont . What I was chasing was the time (min) or distance (m) setting that people are using to get a good trail?

 You need to consider the storage capacity of the unit.

if you have really high capacity, you can set the trail so it plots a point every second or couple of metres, and this will give you a very accurate and detailed trail, but then depending on capacity, it may start to override itself before then end of a trip.

to far the other way and you will have a trail that last for days/ weeks / months but it isn’t very accurate as it obviously creates the trail from a straight line between each point.

dont know the exact setting but mine lasts about two to three days before staring to override. This lets me re- cover similar ground if I want but also gives a reasonably accurate trail.

also need to consider how far you are travelling each day. If you are only heading 5 minutes from when turning the unit on, then you will use less storage space getting to and from fishing spots.

sorry doesn’t give you exact what you want but don’t think there’s a one size fits all.