secror nines are decent boards, but they are truely the salomon and burton of longboarding. PLEASE, support indie deck builders (there are tons), and get yourself a one off custom youll never see someone else on. i have been building and skating my own decks for quite a while, and i can tell you its way more soulful on a handbuilt deck. as for power slides, and the rest of your questions, dont ask here, this is a ski site. ask here: at silverfish longboarding, its the newschoolers of oldschool and longboard skating:
www.silverfishlongboarding.com
PS, if you have any other question, tips or tricks, msg me, skating and mtb'ing are my life in the off season. i can help you out.
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ECS headwear, hit me up!