Connecting the DRAIN

Shower waste trap like in this video or the picture below. I haven't used this product myself but the look is pretty good. It could be more shallow still. 

https://www.youtube.com/watch?v=VGMcz_CYb8I

https://images.homedepot-static.com/productImages/7eb917fc-f3c7-4244-93bc-8cad609e1b80/svn/stainless-steel-glacier-bay-stops-drains-drain-plugs-7044-104ss-64_1000.jpg

The good thing about this is that it has a thread that you can attach a 1" female to 1/2" male hose connector. Maybe with a 3/4" inch adaptor in between. It's also possible to use PVC pipes with a bigger drain and with space for a dirt lock. Making sure that the screen filter on this drain is very important because it will capture 90% of the largest particles like hair and with a fine mesh skin cells as well. Leaving only tiny things and dissolved solids and liquids to enter the filter.