VIX, expect an increase in volatility in August

hello guys, this is my last idea (maybe) before going on holiday! I think we should expect an increase of volatility, first because traders take a break and algos do stupid things, secondly the fractal took from last year from July to September suggests to take a long position on Vix.
The question is how to trade an increase in volatility?
Using options, back spread with calls, or vertical spread.

best regards,

docCDS