Note: This site is bugged. You should put 12 points into Weak Point Shot's specs so you can spam it on bound targets.
The ultimate DPS Bow build. Combines MASSIVE single-target snipes through Ensnaring Arrow + Mortal Mark + Decisive Sniping, and BONKERS AoE damage through Merciless Barrage + Blitz.
Lead Deadly Marker into with Strafing to build target stacks then use Tornado to set up your whirlpool. Follow this with Ensnaring Arrow for extra bind duration through Strafing. Then hit Detonation Mark, very quickly, hit Weak Point Shot for extra critical damage followed by Decisive Sniping. If you crit, which there is a very high chance you did, congratulations! You've just burst for 15k damage. If you got a heavy attack on Decisive Sniping, you've done 28k. If both Decisive Shot and Detonation Mark were crits and heavy attacks you've just done 35k.
You can follow this up with Blitz into ANOTHER Decisive Sniping for even more damage within the Ensnaring Arrow/Weak Point Shot/Whirlpool window. When Tornado is down, you use Nature's Blessing to create the whirlpool effect. There is a little bit of downtime where you'll be waiting for Decisive Snipe to come back up. Fill this time by using Wild Barrage. Weak Point Shot should still be on cooldown by the time your combo comes back up again, so skip it for your second rotation of skills. It will be ready when Tornado is back up. Rotate between these two combos as best you can.
Everything in the rotation leads to Decisive Sniping. Deadly Marker gives you higher crit chance. Ensnaring Arrow's bind gives you more crit chance and 25% more Decisive Sniping damage. Weak Point Shot gives you and your teammates more critical damage. Tornado gives you the whirlpool for a faster charge time on Decisive Sniping. Detonation Mark takes 40% of the damage within the next 3 seconds and reapplies it. Your Decisive Snipe charge/travel time is now shorter than 3 seconds because of the whirlpool.
If you're in a situation where you need AoE, you have Merciless Barrage and Blitz. You can also easily move the 7 spec points from Weak Point Shot's Expand Conditions into Decisive Sniping's AoE spec and trade Lightning Arrow for Gale Arrow. You can also substitute Tornado for an additional use of Strafing, but Tornado looks way too damn cool/thematic and gives you more AoE and a form of CC.
Remember Weak Point Shot's expand conditions does not help you against foes that resist bind. That means you should skip using it in your normal rotation for boss fights and just use it when you see Fury Attacks (the big purple timed attacks you have to block).
Have fun and blast some fools!