I have not tried the Berkley hollow core. I respect Snagged's opinion. He says that this brand hollow core is easy to splice.
You want to pull an end loop into that spectra. This will be more reliable than a bimini twist and have a smaller profile.
The best instructions for this are found on
www.bhptackle.com
Basil can provide you with a topshot of your desired mono that you can join with a simple loop to loop join.
I you just have to use a knot.... albright, reverse albright, worm knot, no-name knot would be a good place to start.