I took my tank cover into the house and used a gopro flat adhesive mount,the heat indoors lets it bond better. I'm also getting a 1" Telferizer and mount arm to use the phone as a satnav,but you can also buy and fit a specific gopro mount to this. I believe someone on here has recently done this.
I still have my tank mount up for grabs if you're interested http://1000rr.co.uk/general-1000rr-discussion/23771-2.htm#post351477