Hand drawn but straight

Hi!

I'm working on a graphic that needs to have a hand drawn feel. I'm having trouble with what should be relatively straight lines. For example, drawing the boards/planks to an old barn seems to be very difficult.

Here is what I've tried so far:

-Draw the lines freehand with a Vacom intuos. Problem with that: It's very hard to make straight lines.

-Hold down shift while drawing to make a perfectly straight line. Problem with that: the lines are way too perfect and look artificial

-Create paths with pen tool and stroke them with simulating brush pressure. Problem with that: Very tedious and also the lines look too much alike (the taper effect is not random enough).

Is there anything else in Photoshop that might help me draw the planks straight without looking too perfect?