I have in the past earned 1099's through bowling and have been deducting items since I received my first one a few years back through a Schedule C.   I am at the end of the form and it is asking about Investment at Risk.  All my investment is in Entry Fees so it should all be at risk, however, I have bowling equipment as an investment as well.  SHould I mark Some investment not at Risk?

Also, I am showing a large loss this year, and have not shown profit in a few years.  Should I omit mileage and other deductions to get closer to even?

From last years USBC you should have already received your 1099..

I claim all money paid and earned for all entry fees, mileage to tournaments, bowling equipment bought, plane tickets, hotels, meals (to a certain extent).

Here is an article I just ran across too..

http://taxhop.com/script/100-business-income-schedule-c

Schedule C assumes you make a living as professional bowler?  Mine will likely fall under schedule A.