Monthly Recurring Shifts

Is there a way to schedule a MONTHLY recurring or rotating schedule that lasts forever and will start on the first day of the month and end on the last day of the month.

The Shift Start and Shift End fields seem to be in conflict with trying to create one.

If you specify Shift Start on the 1st and Shift End on the 31st, it works great, but only for those months that contain 31 days. All the other 30 & 28 day months have an overlap. 

We would try the "On These Months field" and assign each person a month(s), but in our case we have 11 people so we can't schedule this type of schedule for more than one year. 11 months from now we have to go in and reschedule the shift again.

Is there a schedule option that will allow us to schedule a true monthly recurring/rotating, that will go on forever where it doesn't matter how many people you have in the rotation?

Thanks