Snare traps

[Sub Zippo]

So, I'm going to be dueling someone on a ship and I have about a day to prepare. I have a Pirate template Rogue with a +7 in Craft- Trapmaking, and I'd like to rig up a few snare traps with the ship and its ropes. I can't find anything, or at least anything I can understand, to help me in what I would need to do/roll to make this work, how many I could make, and what their stats would be.

So far all I've found it 'Creatures who succeed on a DC 20 Search check detect a simple mechanical trap before it is triggered. (A simple trap is a snare, a trap triggered by a tripwire, or a large trap such as a pit.) '

Can anyone help me understand how such a simple trap would work?

[Cheapy]

The only real info you'll find is the Trapper ranger archetype from Ultimate Magic.

Link here.

Maybe you can swap out a few rogue class features to get those too?