I have an Everlast 250 EX and I prefer to use a foot control when welding. (Foot pedal is a pleonasm, pedes meaning foot in greek. Who has ever heard of a hand pedal?)
Anyway, there's an excellent tacking timer on the 250, but I got bored changing the plugs all the time between the pedal and the handle switch. So I got a couple of extra plugs and sockets from Everlast and made a little box for them. This makes it a lot easier to tack something together, weld a bit, tack the next thing on and so on and so forth.
I couldn't find a toggleswitch, so I just put in two I/O switches instead.

Cheers

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