Regarding canopies on TF'er's, there are some valid points to consider and some observations:
The number of times drivers have been hit by flying objects compared to the driver being on fire. Would it be fair to say the driver is far more likely to be on fire than to ever get hit by anything in a TF'r? If getting hit by something is a concern then they better park all the altereds, pro stock bikes, and any other open cockpit car. Keep in mind drag racing doesn't have 3 wide in the turn in front of you wrecking with parts flying off the cars.
Something to consider about TF'rs compared to any other class. There is a great big fuel line running under the driver's seat full of nitro. In a canopy, should the unthinkable happen, the fire would consume all the oxygen in the driver's compartment in a split second. Like being in a jar with the lid screwed on with a blow torch in your lap.
I don't believe that ANY NHRA class allows ANY fuel lines inside the drivers compartment (even for fuel pressure gauges, etc.) including funny car. What makes TF so different? Necessary by design, I guess. But locking a driver in a cockpit with the lid down and 15 gallons of nitro sitting in the main fuel line at your disposal under the seat may be reason for pause...fire system of not.
The smaller teams running right now (that are the reason we are still seeing full 16 car fields) may not be willing to absorb the $25 grand plus $25K more for spares that this may end up costing just to run 10-12 races a year. This year they already had to borrow from Uncle Harry for the new $10K front wings plus spares to replace the one's many weren't having any problems with in the first place.
This is not going to be a one size fits all deal, just like was stated in the article. Hillary Will can squeeze into a smaller light weight car while Doug Herbert needs an XXXL compartment. All this will drive cost for something that may not be in the driver's best interest. And consider this, the downside of enclosing the driver in a cockpit might be that it is more dangerous to the driver compared to the upside point that they are high tech looking.
Whle they "evaluate" all this at what point does it become "manditory."
Like I said. Just some observations.