FWIW - I am very new to contest flying and have little expertise - so I am confident I can give you the view from a newbie/non competitive older guy.

I flock to any thing that allows people on the ground (primarily my wife) to watch where I am - if something new allows (my crew (my wife)) to see how high I am , I load that - if it shows more - I load that app - all in an attempt to bring the people who care about me and give me the space/time to fly, to feel more apart of my experience and stay engaged in the sport. Tracking is a good thing

I also use the Financially Efficient means of navigation (XCSOAR/Top Hat) on a tablet and backed up by my smart phone. I carry spare batteries and have them hooked to their own external batteries, so they work without a drain on the glider batteries.

I feel it is impossible to stop tech gadgets in the cockpit - hopefully pilots use them wisely and they add to safety, rather than become a huge distraction. (same can be said for FLARM displays, I think)

I would not want to be the CD who has to figure our which dive can do what - I am pretty sure we all would have a problem knowing what apps are on any device and what they do, how they are disabled and how hard it is to enable and disable them on the fly.

VFR has pretty clear definition - and if you cheat, you know it and probably everyone else does to. So you may win a few but you don't make friends and you do not share the experience, so........

i would not worry about tech stuff in the cockpit other than the poor instructors who have to ensure their student keep their eyes where they belong - looking out the canopy.

WH1