Oh yeah, his attacks come from the swords btw, and he throws them with every sword strike, so while it will be a problem, Gon might be able to notice it.
Some of Yoon-seok's feats are in his feats section, btw, if you wanna see his skill feats (Altho not all of them are about skill, but just general feats)
Ultimately, I believe Yoon has a higher chance of victory, since his stamina I believe is still better than Gon. He had managed to regenerate his head and heart multiple times, and can go on training for 8 days straight with no food, water or sleep, and didn't even feel tired at all.
Both of them have pretty good AD, so I doubt any of them are gonna have an advantage due to it.
Yoon-seok's invisibility against normal people makes him completely invisible (Even if he made a lot of noise), but I believe it won't be that much of a problem for Gon, since he will be able to at least notice his location a few times since he's pretty darn smart, and someone in the series has been able to know Yoon-seok's location by seeing the minimal difference in the ground. Not to mention, he seems to only use it when everything else doesn't work, or if he is severely outclassed (Like his fight against King of Steel, where each of that dude's attacks could completely destroy Yoon-seok's head)
I believe the biggest problem here are the buffs, and his explosions. Specifically the speed buffs. Since his every sword attack throws an invisible energy arc, with the increased attack speed rate (2.25x, 3x if he gets severely injured, 5x for an attack if Gon attacks first), there will be many attacks that I doubt Gon will be able to dodge all of them. Not to mention, each attack will be >>9.6 megajoules (One of his buffs is 4x ap buff, while the other one is a buff that can match this 4x buff). I still believe Gon can last for quite a while (Perhaps a few hours), but I believe that it will eventually kill him. Especially since Yoon always aims for the weak spots.
And if Gon managed to damage Yoon-seok and potentially draw blood from him, then he can explode his blood via a thought, and regenerate.
Should I give Gon knowledge on Yoon-seok's regeneration weakness, to even things out? Or perhaps knowledge on his regen and invisible sword attacks?