MH last two weeks of Flower?

Thought I would ask here....I google searched this and did some reading but none of the posts seemed recent. I have never tried the switch from HPS to HID last two weeks of flower but have read it can help with resin content, taste and density. My plants are day 51 so I am a couple weeks from being done. I wanted to try this but have some concerns....one will it effect yield this late into flower? Second do I have to remove glass out of air cool hood. This would raise temps a little in my closet. I know in the past the bulbs spectrum were more narrow if I am using a hortilux Super HPS with increased spectrum and lumes my metal halide light is a sunmaster neutral deluxe. From my understanding it has more to do with the emitted UVB. Would I be better off with the HPS and trying a couple of those retile lights that put off the same thing?

I've tried various methods, all pretty much pointless, I've never seen a significant increase in anything, UVB, MH for last two weeks, the fact is if you have good genetics, you don't need all this bollox.

i guarantee you the Only people That use this shit, is people at home in their bedrooms, no professional grower or breeder does any of this shit, so what does it tell you!

the only thing that I can actually say works, is by leaving a plant in the dark 24-48 hrs prior to harvest, and then it's still negligible.

Yeah...lol I guess it is easy to geek out on this kind of stuff and make it into more than it is. I do know someone who grows on a larger scale and swears by mixing the two with multiple lights. Have you ever tried CMH bulbs?