Too bad your owner has its head up its a$$. Water spots on beer glassware (or any restaurant glassware) is unacceptable in these modern times of indoor plumbing, heated water and yes detergents!!!! Enough soap box. I have found the most effective leverage I have is calling up my dishwashing chemical supplier and have him come in personally and show him the problem. Spend a few minutes explaining the problem and have him inspect the equipment. You would amazed at how easily the dish was machines get out of calibration on chemical dispense, the spray nozzles need to be cleaned and make sure you have an effective de-spotting chemical in the final rinse. Also, check water temps. If they aren't responsive call some one else in for quotes and you would amazed how aggressive these guys are to get the business. We switched vendors 4 times last years until we found the one that works for us. As a final non chemical approach train your bar/waitstaff to hand polish glassware with a linen cloth.