A inexperienced boat captain can get overwhelmed when you have multiple divers in the water with floatlines/ bungees. I have had my bungees run over by a twin screw boat and it aint pretty. It took 20 minutes in 5 foot seas to cut the bungees off the props.

To avoid this it is important that you coach the boat captain before you get in the water. Instruct him to stay down wind and down tide at all times and never drive past your float. If the float is between the bow of the boat and the diver you are in good shape. If the boat is between the float and the diver you are going to have problems.... guaranteed. It is also important for the other divers to swim up current and up wind when another diver gets a fish on. The biggest cluster is when everybody swims over to see whats going on. Multiple divers, wind and float lines equals disaster. Experienced divers and dive partners know this and avoid this. Loosing your $300 Riffe bungee to a prop is something not worth repeating. I have done this several times in the early days and I could have avoided this if I explained to the captain what to look out for.
A little trick I have learned is to stay with your float. Hold on to it when you are on the surface and make contact with it quickley when you return to the surface. This minimizes the cluster factor and it also minimizes the cluster of becoming tangled in the other divers floats and float lines.