User Configurable digipeater filter Do Not Digipeat any position from same station 30 sec

[kq6di]

I would like a user filter or know where to change the code to prevent digipeating a position report from a station if a position report was heard within 30 seconds. This is not an exact duplicate of the message, but needs to filter on callsign and it is a position report.
There are too many new or naive users who are sending positions far too often. I've even seen position reports from trackers 10 seconds apart when bad parameters are entered into SmartBeaconing, Corner pegging.
I don't want to put the most offending into not-buddy, but I don't want to constantly digipeat the same station at 10 second intervals.
Thanks