I've been trying to catch squid at dead high tide around midnight without so much luck.
Then I tried on an incoming tide just after sunset and got them.
Saw lots of them swimming around the rocks looking for food.
Was easy to get them to notice my jig. Was fishing close by a street light.
This makes me think that the time of day is perhaps more important then the tide for squid fishing.

well, most important is that you got any source of light in your spot. I use to fish in Pattaya Thailand often on squid. The best time is always as soon it is dark until 23:00. Then mostly the feeding time stops instandly.
the way i am fihing is to attach the squid lure 30-40cm above the round ground weight and pull it (slowly, the weight needs to stay on te bottom!)back in.
But Light i more Important as the Tide here..

yeah I agree - light and time of day is most important.
I want to use my own light source. Do you have any recommendations.
I could get some sort of powerful halogen lamp and connect it to a 12V car battery I suppose.

Ok so what is a 'making tide', sorry maybe a dumb question.
My next question, does the fishing times prediction have much relation to sqid?

For me personally is it the perfect Moment, when you got after Sunset another 3- 4 hrs raising Tide.. I caught most of the squids 1-3 hrs after Sunset.. my best method is by using a round lead and round 15 Inches/35-40 cm above the lead and roll the lead slow over the ground (if you have spaces for casts and a flat ground.)

well explained... thanks for the info