Most of the struggle has been operator error on the different devices viewing the targets on line.
John that is an issue that's on-going, not part of what entered into the decision not to use them for competition just yet.
One sub-issue is screen brightness: I've used my MacbookPro but reluctant to on a regular basis; it works. Bought and used a Kindle Fire - for a week - before sending it back & buying an older model iPod at Walmart.
Another is shooters who aren't comfortable with manipulating these electronic devices. They're hard-core shooters yet may need some coaching from those more adept when it comes to handling the devices provided by the club. It's just not something they've become accustomed to before so there's a learning curve.
Thanks for your comments BTW.