Gamejolt, Newgrounds? Sites like Poki, Yagames, CrazyGames, Indiexpo too, but they host free games mainly (or only), but there is nothing stopping you from putting a demo there, it will blew up surely 
I never intuitively connected the yellow bar to the dash before 
The forcefield animation together with the text is the most visible and clear indication for me, I just meant the indication where I missed it (e.g. (un)intentionally looked at something else at the moment or was in a whirlwind of fighting), so the bar should be such indication, but I never connected it without you saying this - perhaps a tutorial for those bars? Or removing the yellow bar (and this will leave the health bar very clear) and using some other kind of indication (circle? some flame indication from engine?)