Hi there, if you have a powerful FH, you had better use national blue sponge if you can get it. More powerful and great speed. All the hurricane and skyline needs be boosted. What kind of glue are you using? I recommend you Nittaku finezip or new Butterfly free chack II, Chinese national team uses Nittaku finezip, which is very easy get rid of the glue when you want to reboost it. I am using haifu oil national version, but commercial version should do the work as well.
Here is what I have done with mine. FH rubber three layers of glue (Nittaku), then put the first layer of oil, wait for 5 hours, second layer, wait for 8-10 hours, then third layer, wait for 8-10 hours, I normally wait for at least 12 hours. Then your rubber will look like the photo attached. 2 layers on the blade.
Basically it will last 3-4 month, then you have to do it again. But I wonder after 3 or 4 months, what does your top sheet look like? You might need another new rubber?
Hope this helps.