To answer both questions.
I use Partridge double hooks, Ideally size 4 or 5. Lip hooking heads or tail root. To 15lb soft strand.
15lb because I find 10lb has a tendency to kink too much.
Couple of pointers. Use a lead much heavier than you think. I use 4oz on the Lower Severn, It will ensure you don't get the weight of the lead on the bait when it gets taken.
Casitng out, Keep a tight line all the way down. It will prevent the bait tangling and the trace twisting.
It goes without saying, bites can be very frustrating. From a one inch tick to a rip off.
I am enjoying the challenge.
Thanks to help from Anthony Wilson and some advice from Stevie Williams I have managed a double at 11.7 and a 9lber as well as quite a few 2 to 6lb.
It is one of the few types of fishing where I use bite alarms and bobbins.
The nature of Zander fishing, and their movements in groups means you can have a few takes in 45 minutes followed by peace and quiet for a few hours.
I caught 3 pike only last year, one was an 19lber on a 2 inch bait. None in 5 trips so far this season.
I AM no way as experienced as some on here. Quite happy if they disagree with anything I have intimated. Or want to add.