Coming from a newbie...I didn't enjoy my 45 seconds of doing a game alone.
It was Girls Varsity...a weekend team camp...pay was minimal, but I need all the experience I can get. Come game time, I'm all alone. I ask the Coach running the camp who I'm working with and she says, "He didn't show. You'll do fine by yourself."
Jump ball...possession for about 20 seconds...then the ball ends up loose in front of Team A's bench with a swarm of players around it. Of course this is across the floor from where I am. Player B1 picks up the ball and in for an easy lay up. Coach A yells, "That ball was clearly out." I - falling back on the 'you don't call what you don't see' rule - say, "I can't see the whole floor by myself." (It wasn't a question of knowing who hit it out...I didn't even have clue that it was out.)
Next time down the floor here comes the Coach who's running the camp, putting on the stripes. She says, "At least I can help call the lines."
Personally, I will never plan to do a game by myself. I will if I have to, but I won't like it (and probably no one else will either.)