Hello again Customer,
Obviously I do not know in detail how your business operates. But in your first post you said that you had a small vehicle performance and detail business. I did not take "small vehicle" to mean boats and/or boat engines. But even if you do perform some work on boats or boat engines, if that is not the main focus of your trade, I am quite certain this expense would not be allowed.
Many taxpayers are under the impression that they can use their business to write off a number of lavish expenses or expenses connected with a hobby, simply by somehow connecting their business to that expense. But that is a false impression for many people who over the years have heard that you can "write that off as a business expense". Another example of this is a business who would buy a lake front property and try to write it off as an expense because they entertain clients there sometimes. That would not work either. It's just not that simple.
The expenses to purchase and maintain a boat far exceed what normal advertising costs would be. So in order to justify those expenses, your business would need to be primarily focused on the boat industry, and even then not all of the costs for the boat would likely be deductible. There is still the element of the personal use and enjoyment that you get from the boat, so even if your business were directly related to the boat industry, the expenses for the use of your personal boat would still be limited. But if this is not the primary focus of your business, then none of these expenses would be allowed by the IRS.
The IRS might allow you to deduct the cost of having the name of your business painted on your boat as an advertising expenses, but they would never allow you to actually deduct the cost of the boat or any of its operational expenses.
Believe me, if there were any way for you to claim this without it being risky, I would be the first one to share that information with you.
Thanks again Customer