So it should be well established by now that activity is a trade or business; but a good time to review and document the 9 factors.
In regards to factor six, one of my favorites cites: "Abandoning an activity after indications that the activity will be unprofitable signifies that the taxpayer engaged in the activity for profit. Canale v. Commissioner, T.C. Memo. 1989-619"
That came from Morrissey, John E., et ux. v. Comm. famous case of full time banker and weekend drag racer.