I have poured my cash into STR construction projects, and so actually have a loss which nearly equals my income.

Using the "STR Loophole", this should enable me to deduct these expenses from my W2 income.

However, this also puts me at risk of an audit. 

Are there any other STR investors who have struggled with this?

Is there a "rule of thumb" for avoiding an audit? -- i.e. "Do not allow your losses to reach X percent of your income". 

I just wondered if there was a threshold that I should be wary of. 

Thanks in advance.