Based on your question, I'd suggest "713900" for "Other amusement & recreation services (including golf courses, skiing facilities, marinas, fitness centers, bowling centers, skating rinks, miniature golf courses)."
Sometimes the codes aren't specific enough for certain occupations, and you just have to go with what's closest.
Please see "Principal Business or Professional Activity Codes" starting on page C-17 of the IRS' 2018 Instructions for Schedule C if you'd like to search for a more appropriate code.
Based on your question, I'd suggest "713900" for "Other amusement & recreation services (including golf courses, skiing facilities, marinas, fitness centers, bowling centers, skating rinks, miniature golf courses)."
Sometimes the codes aren't specific enough for certain occupations, and you just have to go with what's closest.
Please see "Principal Business or Professional Activity Codes" starting on page C-17 of the IRS' 2018 Instructions for Schedule C if you'd like to search for a more appropriate code.
I wouldn't go with that one, since it's under "Personal & Laundry Services." At least 713900 is under "Amusement, Gambling, & Recreation Industries," which is a lot closer to what you're doing. 😉