I recently spooled 2 Penn 50VSW's with 135 hollow Izorline. I first clean the spool and then coat with a thin layer of paraffin, I burnish the paraffin finish. I create a loop splice in the line to be tied to the spool, then wrap twice and tie. I lay the tag end across the spool and and begin spooling taking care to make sure the first layers lay down smooth and tight. I place the bulk spool in my lathe and use the transmission to select the appropriate tension. Just a note, When I was spooling my Daiwa 900H's I bent a reel seat, When I say Tight I mean Tight. I spool all my reels this way and have never had an issue. Last week a bluefin north of Cape Cod Bay took 85% of the spool before I started to recover, and the line slipping never entered my mind.
The smaller solid spectra is much more prone to digging into itself than the heavier hollow.