Yes.
Actually, there are differences of opinion, and more than one way that works.
In my case, I try to move very slowly through the kelp bed on the surface, trying not to splash with my fins. Many time you can get a shot from the surface, although some purists feel that it isn't sporting. I'm not a purist.
Anyway, I try to make most of my forward progress on the surface rather than during dives, but that isn't always possible. The kelp can be too thick on the surface, and there is no way to make forward progress without raising a ruckus and scaring all the fish away. I've attached a photo to show how it can look. When its that way, its also hard to even dive without raising a ruckus, so I just stay along the outside edge of the kelp bed.
When I dive, I choose between two approaches. I might dive to just above my neutral depth (currently around 21 feet) and grab a kelp stalk and remain motionless (aspetto style?). The grip on the kelp keeps me from drifting up, and I don't have to wave my fins. It took me a long time to get myself to believe that I could wait for the fish to come to me this way, and if it doesn't work for a while I tend to loose faith, but it really has worked often.
The other approach is to dive to my neutral depth and then fin very slowly. When the water is very clear, I might tend to use this method because I'm afraid that staying motionless won't last long enough for a fish to come from over the visible horizon during my breath hold. However, even in very clear water, its surprising how many can come from behind me, from behind some kelp, etc. during my limited breath hold.
Everyone spits out his snorkle as he dives so as to not emit a stream of bubbles. Most people make an effort to get all the bubbles out of their wets suits during a warmup dive. Sometimes they can be stupid as rocks, but many times white sea bass will spook at bubbles. And for sure I'm seen many of them spook when they hear my ears squeak when I equalize pressure.
Another thing that works for me is holding my mid-handle gun "soldier at arms" style, on its back with the handle back near my thigh, and then extending it in the direction of the fish rather than carrying it out in front of me and then swinging at the fish. I've had bad luck swinging at them. The photo stolen from Terry Maas's Blue Water Hunting and Freediving, but keep in mind that is a giant tuna gun, and my smaller gun's muzzle is right beside my head when I carry that way.
Of course I have friends who do very well who never grab a piece of kelp to remain motionless, and who carry the gun out in front of them. I'm just telling what seems to work for me, but its a work in progress. At age 69, I just hope I have time to finally figure it out.