Full service high labor costs

[carspacarwashes]

Any full serve guys ever toyed with idea of closing Sundays (our slowest day) to combat high labor costs? We've reduced every major expense there is in our company, but this one is eating us alive. We already converted 1 wash to express with mild results after spending 500k! Really don't want to go through that again. I understand the opportunity cost involved and am willing to forgo Sunday revenue to reduce expenses. Just wondering if anyone else had actually tried this and what affect it had. Thanks