AdvancedTemplate weapon question

So today in a tournament I was helping my friend when an issue came up. My friend was playing my Eldar army, and he was playing Dark Templar i believe.

The issue occurred with a number of things.

This was how the attack went. My friends unit were all on jetbikes

X=Singing spear models
O=Warlocks with destructor
W=Other Warlocks
H=His troop of marines
D=Venerable dreadnaught
_=blank space

___X_W_W_X
DD_HHHHH_O
DD_HHHHH_O
_________W

Okay so here were the issues.

O, the warlocks with destructor, have a template weapon (the fire one)

He targeted the Dreadnaught with his unit of warlocks and farseer. The two Singing spears were in range, and the template just fell short of the dreadnaught, but covered the entire group of marines basically (twice because of the two having destructor).

Issue 1. Do the template weapons resolve over the marines, even though the fell short of there designated target

Issue 2. Do the singing spears get to attack still? (range 18", s9 against vehicles, assault 1). These weapons were in range.

Issue 3. With the jet-bike models, where is the template weapon protruded from? In the BRB it says from the base of the model, so would that be from the edge of the hull of the bike, or from the actual "flying" base? And are they measured from the middle, or the edge if it is the "flying" base?

Issue 4. At the same time he attempted to psychic hood my warlocks. Can warlocks be psychic hooded? It says in the Eldar Codex there powers are available permanently, and therefore do not need to make psychic tests to use them.

I was trying to help my friend play his first game, and got massively rules clumped from a single attack, so next time it happens i would like to be able to help more. All help is appreciated, thank you.

That's all i can think of that happened for now, but i may post more regarding this attack later.