N, thanks for the reply. You got some *very* nice shots there!!!! Yep, I've used an intervalometer a few times but my timing of the storms just hasn't been right...yet! I may yet try one of the less expensive triggers from eBay...seems like one basic one that comes as a circuit board kit also comes as an assembled unit. I could probably solder one up (old ham radio guy) but it's been a while since I built anything...might just bite the bullet and order the ready-made unit...maybe.
Take care and be safe with that lightning,