Now this is mainly for my own purposes, as I doubt anyone else will want to build a Rat this way & I only plan on making one.  

Just a standard Rat, built on 0.15" vero and I've prioritised looks of build practicality (or at least what I think looks good anyway).  I have built this, and can confirm that it works   

PROCO RAT - 0.15" VERO LAYOUT

The layout probably makes more sense with a photo as a reference

PROCO: Rat, with mods

The humble Proco Rat - a staple of distortion throughout the 80s, and then later rediscovered by people that couldn't afford expensive pedals or just liked the sound.  By the way, I refuse to acknowledge the Rat as a fuzz pedal.  Others may, but not me...

Excellent analysis on Electrosmash if you have somehow missed it - link here 

The layout could be smaller, but I like a bit of room on the board, and it's still only 21 wide.

PROCO RAT WITH MODS - VERO LAYOUT

This modded Rat has switching diodes and an adjustable highpass mod using trimmers.  The straight Ruetz-style switch can be a bit much for some people, so the option to dial it in via trimmers and leave it seems like a reasonable idea.

The switching allows for a few diode combinations or just leave off the LEDs for an open setting.

Same again, but without the trimmers.

It's a Rat...   and of course you can build any version of the Proco Rat using this point to point layout.   Pop the Earthquaker Devices Tentacle in front of it and a boost after it,  and now you have a Sunn Life pedal.  

PROCO RAT - POINT TO POINT LAYOUT

 

PLEASE NOTE:  Different coloured lines are not joined.  I hope that obvious, but thought I should mention it anyway.