The higher the pg the more flavor... VG tends to mute flavorings..... so in high VG mixes I tend to use higher flavoring percent than with a high PG mix.
But just because you are getting weak flavor. ... don't assume it's the juice. . More likely it's the mod and atty, HOW they are setup, causing the issue...
what wire are you using... ? not familiar with the skyhook ... but 170 watts sounds like a real cloud chucker.. I vape around 35 -60 watts single and dual coils ..SS around .25 -.50 ohms .. i don't use a 'wide bore' drip tip .. nor do I have the airflow wide open.. ton's of flavor .. for clouds I use wide open air and 100+ watts ... if that gives you any help.