I have a search light on my boat, but the only thing it does (so it seems) is light up the bow of the boat and roughly 10 meters in front of that. Pretty useless if you ask me.
I then saw on Youtube, channel of MV Freedom, that Shaun (the owner) had installed a simple led bar on the bow, which gives him much more usable light. The bow is now in the dark, but the water ahead is lighted, just can't turn it left or right.
Of course you should not plow through heavy waves with that mounted on the furthest point of the bow, but it does work.
However, what works even better for him is a FLIR installation and after seeing that I would rather opt for a FLIR system than for a search light installation which cannot do a lot. The whole idea of a search light is to be able to see something in the dark (or to find something) and the FLIR can do that without a problem. In fact, I have worked with FLIR onboard aircraft and was always happy with the capabilities. As long as you have a good one it is almost as good as daylight. But yes, they are more expensive than search lights.
Will I buy one ?
Nope, we don't do night passages, we don't have schedules to keep, we plan our routes in such a way that we only do 2 to 3 hours a day (and many days on anchor in the same spot).
If anyone is interested they cost about 3000 - 4000 USD excl installation.
But ok, that is my personal opinion, fully understand if someone has a different opinion.