I have the benefit of actually having passenger set experience as well and can agree that the iPad screen can be more difficult to see during the day. I actually plan on making a bit of a shield for mine to help reduce the glare overall. The lack of pre-running is also a bummer as well as we had wanted to pre-run our first/only AVE race, but it was not allowed. So the only notes we made were based on the sharpness of the turn, or areas where the course crossed itself (sketchy). I'm not sure if that was specific to that race or not though.I haven't tried the LeadNav. I actually have the setup for it, but just run the Lowrance by itself. I have been told, the Ipad can be difficult to see in the daylight and unless you're "pre-running" to take advantage of marking all of the turns/dangers/whatever else you want to mark, then it's no better than using a Lowrance GPS. Again, I have no experience actually using the LeadNav, just what I've been told. I really have no complaints with just using the Lowrance...knock on wood. Whatever system you end up using, is only as good as who is sitting in the passenger seat.