Yeah, none of those work the way you think they work.You can write off conventions - isnt there a trader convention in vegas each year?
You can also open a 501 c 3 as a wildlife preserve, donate land to the Non profit, and write off the taxes that way
Or open a different business like "trader consultant" and do it that way. There are ways to game.
IRS during an audit doesnt go and check to make sure you are telling the truth, they are lookin to see if its reasonable expense. Plenty of ways to funnel trader profits so you dont have to pay taxes or pay very little than what would normally be your tax bill.
The problem if you haven't actually done business taxes is that you're familiar with it from friends and people you know which gives you just enough info to be dangerous. For example, a realtor can write off most of their company car costs. A sales guy can write off many of his business lunches. But a trader can't. And when you buy $100K worth of land and do a conservation easement, you can claim a $100K donation which saves you $37,000 in taxes. Net net you're still out $63,000 you paid for the property which now has limited uses because of the conservation easement. And yes, the IRS sure has heck does audit to make sure you're telling the truth, who ever told you otherwise was definitely steering you wrong on that one! Of all the things to try to cheat on, your taxes is one of the stupidest.