Short attention span? No problem, play a speedball mini
I like playing the speedball mini-tournaments on BBO. They go quick (12 boards, a good number) and you don't have to worry about getting opponents. Yes, the players are mostly terrible, but isn't that true in most fields? Part of the skill is how much you can beat them up.
I enjoyed the scorecard shown above (from tonight's 9 p.m. ACBL speedball tournament). I was wired and played with Kateb135. We had all plus scores except one board the last round. That works.