Dye is sometimes effective at controlling FA, however it is detrimental to your fish. It prevents sunlight from getting to the phytoplankton in the pond which is the base of the food chain. Less food, mean skinnier slower growing fish.
Tilapia may be an option for managing the FA without chemicals. Plus they will also help with the forage base in your pond. There are several local sources you can purchase tilapia from in your area and there are forum members such as Rainman and Weissguy who both raise different species of tilapia as well.
Do you have a dock on your part of the pond? If you do, installing an automatic feeder will certainly concentrate fish in your part of the pond for better fishing and the added feed will certainly help the fish.
Depending on the interest level of the other owners you may be able to get them to at leat partially chip in for the cost of things. Consider an aeration system, adding tilapia, etc... Those two things alone should control the FA and really help the fish population greatly.
