O.K, This is NOT for the guys who arnt bold!,
The REMOVING the stickers is the EASY part!!
Go to a Hobby Store and get a can of "IRONEX" for $2.99 (It is used for model airplane covering) This stuff will COMPLETLY remove the sticker and will NOT harm your vinyl Visor!
Apply some on a soft rag and take your time and rub moderatly on the sticker, It takes awhile but it will dissovle the sticker
Then, When you are happy with the removing part find a friend (or buy for $20) a HOBBY TYPE Heat Gun (They are used to shrink model aircraft covering)......DO NOT use a regular Heat Gun unless you are VERY skilled with it!!, You will burn the sht outta your visor!!!
CARFULLY, (And I mean CARFULLY!) Pass the Heat Gun slowly back and forth across the COMPLETE side of the visor you removed the sticker from.......Hold it around 2inches from the visor and DO NOT STOP on any one area too long!!
This will remove ALL the Wrinkles you have from rubbing off the Sticker. (This works for you guys that have used other methods of sticker removal too!)
Just BE VERY CARFULL (Practice controling the Heat Gun on some old Vinyal if ya have some around) Again I stress to NOT hold the gun in one area for a very long period!!!
When your done you will still have a SLIGHT different grey shade where the sticker was, But it is not very noticeable at all
(I will try and post some pics if ya want of the finished job)