Just got this worked out this afternoon.
Finally found a finish gate from a V-drop playset...works great!
Also built a little catch box for my races, been using a towel across the track!
The gate and track are velcro'd (is that a word?) to the wood so the box and gate are separate.
The only think I don't like about the gate is the label is on the other side!
I'm going to make an Austin Diecast Drags sign to go on this side.
Time to race!