In 2008 We did a party where we linked over 30 boats together. We used a Audio Control BLX-10
It takes a audio signal and converts it to a balanced Cat 5 Line. That Cat 5 Line was run a few hundred feet from the DJ booth on land down to the Dock's where we used more BLX-10's to convert and split the signal back to a RCA. Then boats passed the signal from boat to boat with Rca's We used 1 BLX-10 for every 5 or 6 boats.
We are doing the same party again and wanted to see if there was a better way of doing it. FM modulators (No Bueno)
Wondering in anyone has played with the Audio over bluetooth
Here are some picks from the orignal event so you can see how the docks are set up.