I have 2 of them across my transom, and they are the best option IMO for boats under the 40’ range. I have a 232 gulfstream, and the bracket makes it kind of tricky to get the proper placement, but I was able to get them situated. I would say on a boat that size, I would consider 3 across the transom. Make sure you get them plenty of power to them as well, proper gauge wiring, and consider long wire runs. I would also consider the poco lighting interface, as you can adjust the colors and etc through the mfd (if going with the full color spectrum option) I have all my accessory lighting on that device, to cut down on the amount of physical switches. Also you might want to consider drilling larger holes and using thickened epoxy to plug them, and then drilling those holes out to mount the lights. This will give you peace of mind that if whatever sealant you use fails, you still will keep the water out of any of the coring material used in the transom.