Ive used rare earth magnets, heat shrinked them and then siliconed onto the end cap. Magnitises to the facia or colourbond with no issues. Not sure what you are trying to mount to but hope this helps.
Have you had any issues using a .0 ending? We had an .even number for one year only and had people suggesting they couldn't tune in on their digital radios in the their cars. Changed to a .odd ending now with no issues.
I bought some earth magnets and heat shrinked them. Then liqiud nails them onto the suntuf end cap. Magnet them onto the facia amd slide in tne lights like you know.. Works a treat...
Ive found a secure and easy method to be 1/2 conduit saddles (size dependant on your rope light) from electrical supplies stores. Unscrew roofing screw and place on the saddle. You can paint them the same as your roof colour. Then come lights time, loosen slightly , slide in rope ligt and...