Hey Growmie,
The fastest and most efficient method would be to use alcohol. Virtually any type of alcohol will dissolve the resin off of any surface. The only limitation is the concentration of the liquid. Any source of pure alcohol will be the most efficient way. Rubbing alcohol is the most common, but Isopropyl is readily available too. Another wonderful option would be to make finger hash. The idea is to start by pinching your fingers together to warm up the trichomes. Then go onto rubbing finger against finger, making a circular motion, and applying slight pressure. You will soon feel tiny little clumps of hash gluing together, forming tiny specs of hash.
Hopefully, this helpful and remember ..."Happy Growing" and "Free your mind one puff at a time".