Quit moaning about the end of summer. Time to look ahead. Come December, it’s Tahoe or bust. Speaking of busted, that’s exactly what happened to your ski pole last season when that fir tree got in your way on the slopes. No blizzard condition will mask your less-than-perfect gear, so don’t even think of hitting the mountain without some new equipment. Whether you ride one plank or two, the Marin Ski Swap will outfit you in style. Here’s how it works: Outfitters, rental shops, ski areas, and slope-side resorts bring rental gear, demo equipment, and inventory from last year’s lines. They offer you absurdly good deals. You bring old gear — from old poles to those outgrown super-slinky snowboard pants (thanks for nothing, après-ski refreshments) — and enter it into the swap at a price of your choosing. If someone buys your stuff (make sure it’s in good condition, please), you keep everything minus a 20 percent commission. A word of advice: Get there early for the best deals. Because it’s all downhill from there. The Marin Ski Swap is being held October 9 at the Marin Center, 10 Avenue of the Flags, San Rafael (415-499-6400 or marin.org).