If I was a provider, I would open up an S corporation for a "consulting business". Assuming I generated $100k/year in revenue (for conversation sake, I know some providers make less, some more). I would report around $60k/year in actual revenue, I would then make sure to write off all expenses that I could. Hotel expenses / Travel expenses/ fuel expenses / meals & entertainment / leasing a vehicle / etc. In theory you're writing off around 1/2 the $60k, so you're only reporting around $30k in actual net income. You pay the taxes on the $30k which is either in your bank or spent on expenses that can't be written off (house). The remaining $40k, use for untraceable lavish/luxury goods (basically things that don't have titles attached to them) and be sure to save a portion of it. The portion you are saving, I would recommend investing into a really nice safe, place the safe in a nice storage unit. Safety deposit box is extremely stupid because the IRS and bank can get into it.
The reality of it is, the IRS or government doesn't really care what you do as long as you are paying your taxes every year. They go after you when you're not paying your taxes, the biggest mistake people in illegal trade make is not paying their taxes. It's easy to stay under the radar. Even if you get audited, you're writing off legitimate expenses and as far as they can tell, generating legitimate revenue as long as you are not writing off things you shouldn't, you'll be fine.