It depends on your particular boat; hounds are not in the same location.

For the Nacra Infusion the hound is in the same location as the Nacra 17:

You have a few options on material:

1) 2.5mm Marlow D2 Max SK99
2) 3mm SK78 (any brand)
3) For a durable set you can use a line with a dyneema chafe sleeve:

In 3mm that WR2 is a very nice and super durable trapeze line.

I generally float my ends so I have a few inches of travel adjustment at the base to get the handle right where I want it.

Scorpion F18