I appreciate all the suggestions. I loved Moto Mech's suggestion to paint sand onto the step but I am far to lazy for that. I went to the big green shed as suggested for some black Croc grip and came out with some grey 3M stuff ... not sure how that happened ... SWMBO wasn't even there to confuse me and put silly ideas in my head... must have done it all by myself!
Anyway it's 50mm wide and allows 3 strips with a bit of relief between. I am near Canberra ATM and had to get out the heat gun to warm up the step before sticking down the tape.
![IMG_0022[1].JPG IMG_0022[1].JPG](https://expandasdownunder.com/data/attachments/50/50463-f57c1d242596e482848015eaf154bea1.jpg)