so, removingn the anatomy responsible for the vast majority of photosynthese is the plan to increase photosynthesis in plant?
intercanopy lighting is a great idea, but if no leaves to strike, those photons are 90% less effective or more... while anything green on the plant liekly contains chlorophyl it's at significantly lower concentration everywhere except he top layers of leaves. even the underside is less effective at receving light in regard to photosynthesis potential.
so instead of directing inside the plant, go around it. you won't have to remove any leaves. if you want light inside the canopy, you need less powerful light to the point if leaves are nearly resting against it, it won't cause any problems. i think you'll get more return on investment with some strips on parimeter of plant on side, maybe slight angle down to better hit tops of leaves.
also, a lux meter would help decide how low to place it.. see where the light penetration drops off... see how wide of an area ou cover with your led strip -- probably near 12" wide on narrow dimension of strip, if fairly strong. so you wouldn't want to lolipop anywhere in that zone if applying strong light, now.
it will definitely increase yield. you are adding DLI to areas not receiving 'max' dli relative to environmental factors. you'll need it from early development until end. the question is does the extra yield justify the extra watts. you won't know with varying strains and varying environmental variables unless it's extremely obvious. so, it's hard to trust anyone anecdotal experiences on this. a real sample and consistent application of other factors to reduce overall volatility of results is needed for something like this. definitely increases yield, but is the percentage increase justified by the price?