Here is one of the better shots I got of the grass drags. The racing started a bit after 1:00 pm and ran until 5:30 pm, with a couple of 20 min breaks.
It just happened that I was sitting at a picnic table watching the racing with the wife, kids and mother, of one of the guys racing, Brian Frankenberg. Brian did well, running in several classes. Late in the day, his 5 year old daughter ran in the kiddie race ( 125 cc Ski Doos ? ) I wasn't aware sleds this size were even made.
In the photo, there are four sleds racing, ( you can't see the sled behind the wall ).
The sled you can see at the bottom, is being driven by Lea Tanner. She had one heck of a day, as did several women. The Husband / significant other ( ? ) would bring the sleds to the line, Lea would casually stroll up and saddle up. ( she raced in several classes as well ) They did none of the track cleaning and lubing that most did, and when the light turned green, Lea was good at cutting a good light. As the racing progressed from stock to modified classes, the tactics looked clear to me, Lea looked to be around 100 lbs, and she was just flying down the track, waist length brunette hair billowing behind her helmet. In a couple of cases, she had the hotter sled bouncing from ski to ski, but she never let off it, riding it to the finish line, even though it must have been a bit scarey.
It looked to me, that if you want to grass drag, the key is cutting a good light consistantly, and getting a good launch. Most of the time, the sled that came off the line first, won. By the way, Lea won the race pictured.
The funniest thing we saw, was the middle aged, good sized guy, who lost his grip on launch, and went off the back of the sled about 20 feet into the run. I think he was a tad embarassed.

He dusted himself off, walked a bit stiffly to the sled, plugged his tether back in and rode back to the pits.