Bowgun Tank Skill's Recommendation

I was thinking to make bg tank, specially because of the decoy shot. But after looking at volgagon i was thinking that bg tank would less usefull for the run because of the less skill that can inflict ailment compared to 1h and knux tank.
So if there's anyone that have a decent bg tank build for this boss i would like if you willing to share the skill set

 

Use a sword then,

Berserk gives you 25 crit, with base crit you would have 50 crit ald. Use sakura fan hair clip with yashiro azuki xtal for 20 crit, seele zauga xtal on ring for 15 crit. Thats 85 crit achieved. Get an element+crit rate for your sword(s) or just get crit food buff to reach 100 crit.

Then use any elemental sword that you want. Get max level javelin for 75% ailment proc rate. The ailment depends on the element of your sword. Light is dizzy, earth is slow, fire is ignite, water is freeze, wind is blind, neutral is flinch. Meteor breaker ald gives dizzy with 75% default proc rate for ohs. Lvl 1 is 77.5% chance. Magic Lances or binding strike gives you stop, assault attack gives you slow. So basically as a tank, you can have 4 ailments possible.

Bow gun can still give decent chance of ailments at 50% for paralysis, slow and lethargy. The problem would be you cant use elemental javelin as alternate ailment.

 

Dont worry bout the crit rate, i've already have my own vision of 1h tank, it just that i wanna know if there's any skill that 100% could make volgagon become purple when i use bowgun (and so that i could somehow spam it whenever i want) but now i remember that with only shield stun on the pocket, bowgun tank wouldnt do much to volgagon

 

ermm im using smash and sonic stargems thou. not as effective with knucs thou but still handy or use impact but for me a waste of skill pts imo