G3 Climbing skins - troubles with trimming and storing (all models)

The purpose of this article is not to blame G3 (although some reservations could be found), but to point out certain troubles and shortcomings in included user's guide, troubles you will face in case of trimming skins on your own with provided tools (applies to all current versions of G3 climbing skins). Original trimming tool was described in Czech at Ořez carvingových tuleních pásů – G3 Trim Tool.