If it was me, I would look into using a database trigger. Triggers are little pieces of code you can get to run in the database when certain events occur on a table and finally got added to mysql in release 5 (which you are prob using). You could for example, write a trigger so that every time a row is inserted into tableA (mosets table) that you extract certain field values and automaticallty insert a row into tableB (hotspots table). To go this route, you would need insert, update and delete triggers so that all changes in mosets are automatically reflected in compojoom. You will likely also want a lookup table that records the id relationships between mosets and compojoom so that you can do the delete and update triggers.
This path allows you to do the changes without changing source code in either mosets or hotspots.
Anyway, sorry if this all sounds like gobbeldy gook to you. Triggers are not very complicated - far easier that hacking mosets and more automated than doing periodic dumps to file from mosets and then import into hotspots.
Mike