If the hooks are cold, the lead will harden quickly when it hits the hook. You might allow the hooks to sit in the warm mold for a minute before pouring. This may allow the lead to form around the hook more completely.
As far as the hook being loose in the mold, you could take a little high temp red silicone and put a light coating where the hook lies. This will prevent it from moving around when you close the mold.
As far as the buzz bait pulling to the left...if the bait only has one blade, the direction that the blades are bent will dictate whether the bait runs to the right or left. A single bladed buzz bait will never run straight.