The Covid-19 time trial series enters week two.

The course is a four corner loop with a second smaller loop so there's 8 90* turns.
The turns are open and smooth you can take at 85% power.
Decent pavement but not butter smooth, one section that's a bit choppy.
The route begs for a legit TT bike and most of the top ten or so have some sort of aero setup ranging from clip-ons to deep section wheels to disc to full on TT bike.

Not that I'm wanting to buy anything but I am curious how much improvement I could get with clip-ons, disc wheel, latex tubes, or whatever.

138 pounds
16 pound bike
20km course, 265' of climbing
195watts
I averaged 21.3 mph (34 minutes 47 seconds)
Good enough for 11th out of 26
I'm not time trialist but can stay reasonably aero on this course-- in the drops or on the hoods with elbows in and forearms flat.

Top time was 30:55
About 10 of us within a 2:00 time slot