Don't know about your rudders....
But a Stiff tramp make's a fast boat
It's is not really impossible to have it too tight....but I settle for the car key test...If you drop your keys on the tramp and the bounce almost as high as the hight you dropped them from, it is almost tight enough !
Don't go totally mad.....I use the bar from my Socket set and a small bit of wood to lean against on my back beam - with the help of a fellow sailor to get the trap tight. 4 or 5 iterations of :
1, Tighten between each eye on the back beam using the bar as a lever. Tie off....
2, Walk around tramp to settle down
3, Return to 1 till oyu cannot get the bar between the tie rope and the back beam.....
Then tighten up any lacing at the side as tight as you can get it and then finally re-tighted by looping rope around this in a figure of 8 type action to make max tight.
Sorted !