PDGALive is great. It's quick and easy to set up in Tournament Manager before each round. It automatically links on the results page and is stored there forever (as far as I can tell). There's really no reason not to do it. It's fast, it's easy, it uses extremely little data, and if you do it carefully it'll help verify your scores for you. The only danger is when people rely on the live scoring Total Score instead of doing the math themselves. It's easy to mistype an individual hole score, so if you just blindly copy the total from PDGALive onto your paper scorecard, you run the risk of screwing up.
I mention it in the players meeting and always state that it's strictly voluntary. Awesome if you do it, no problem if you don't. My last few tournaments have had almost 100% participation (except that damn MA60 division). Also it might be worth noting that Live Scoring is not official -- you will still be counting the paper scorecard for the official score.
I print out a bunch of slips of paper and fold them onto the scorecard (hell, print them on the back of the scorecard if you're feeling fancy) that say:
We are asking for a player on each card to volunteer to enter scores for PDGA live scoring. If someone on your card is willing to enter scores, please follow these instructions:
- Navigate to pdga.com/score
- Access code is XXXXXX
- Select your division, round #, and names of the players on your card
- BE SURE TO START SCORING ON THE CORRECT HOLE
- Enter each player's score on each hole