Jim - having had a closer look when you mentioned it, there may be occasions where the start and finish lat/lon points are not logged automatically from page three - this is a genuine bug which slipped through. The location is also [deliberately] automatically 'un-mapped' if you adjust the course by more than +/-100m so that the location info isn't misleading for a point which has moved (ie splits) - if you think that this is too draconian let me know! I've also taken the opportunity to change the mechanism of page 3 which hopefully will make it much more user friendly. For the reverse measurement scenario I'm just putting the finishing touches to the ability to use fixed or variable start/finish points as with the forward case (hence more useful for post-processing if you are attempting to adjust a course after measurement.) I don't own a GPS capable iPhone so would be interested to see how the location functions affect battery life. There are various economy measures that can be used to leave the feature dormant until actually requested but these slow down the speed of acquisition or affect precision just when you are in the act of logging a point.