Spider,
For hi viz beetles I use the same pattern as shown here
The Lakeland Beetle - Lakeland Fly-Tying Limited
I just add some bright aero wing under the whip finish.
They usually lie the right way up on the water. I havent used the terrestrial hooks, but given that lakeland are using them in the above pattern, I doubt they are the problem.
I can't see much being different between an ant and a beetle tied in foam as the principle and materials are the same ... just more segmented.
One pattern I do prefer is a parachute version, I just like the idea that the hackle gives an impression of movement on the surface as opposed to a dead lump of foam.
A hackle tied around the hi viz post should balance the flies out.