When I have to fly solo, I perfer to work opposite the table. That way you have a built in "Not from my angle" response. Last time I was in this situation, one team kept trapping near midcourt and pressuring the ball above the arc. I would peak down and use peripheral vision for off ball stuff as much as possible and called a few fouls because it look odd out of the corner of my eye. Players got the hint after the calls and my talking to them in transition and cleaned it up.
I did have the coach of the team trapping yell for 3 seconds a few times. At half time I asked him if he really thought I was going to try to count for a lane violation when there was a double-team trap right in front of me. He said "I know you have that play, but your..." and stopped. I smiled and said "Go ahead, finish your sentence." He just grinned and mumbled "Oh yea, I forgot". I started to take it as a compliment but decided he was just being a coach (present company excluded Hawks Coach).