Easier with indys than ventures and thunders.
I kind of lean back and don't try to lift my back wheels too high off the ground. I feel it's way easier to go far with your back wheels pretty low.
Also when I was learning I found it way easier with my board backwards but I don't really know what that's about. Some geometry bullcrap I guess
i learned nose manuals on thunders, switched to aces, did nose manuals on those for 4 years, then switched to venture, and i can still nose manual just as easy as before.
the hack for nose manuals is to put most of your weight in the pocket of the nose, for me that's the toeside pocket but i guess that's personal preference. your front foot should be somewhere between the bolts and the tip of the nose, but definitely not at the tip. it's easier to nose manual with both of your feet on the bolts than with your front foot on the tip, unless you're skating a board with no nose (like natas used to do). the main disadvantage of this technique is that it's harder to 180 out in the opposite direction of the pocket where you put your weight, i for example can't really bs 180 out of nose manuals unless i'm turning backside while manualing.