Re: [UberChris] sliders
Most canopy manufacturers will have one or more sliders that they make for their specific canopies. The design criteria are reasonably simple (aspect ratio, material, overall size) but their permutations can be complex, and they way they interact with different canopies can vary. In other words, a large mesh slider for a FOX 205 may not have the desired effect if transplanted to a Blackjack 310.
Your best course of action is to contact the manufacturer of your specific canopy and ask them about a slider for it.