I also use the select one defender per phase 'trick' and try to slow the ball from time to time. The WL is a gem, I try to balance out the roster (lowest rating 30, highest 99) and replace half the team I would start of with players with a rating of 30 - 40. Dont know how all the newer releases got so much wrong. I have tried other rugby games but keep coming back to this. If that does not change anything ingame, you might have to import all those files into your datagob file, as originaly, all files are being read from there. Once you load up tri-nations (try both years/random) the teams to play with should be Saracens, Toulouse and the Hurrincaes.
Try edditing the tri-nations file (27f224714b2839695c21a148b77fa99b) change the index numbers of the three teams to Here is the video game Rugby Released in 2000 on Windows, its still available and playable with some tinkering.
I would suggest a trial and error approach.
The only thing that stopped working for me when switching to Win 10 was the face preview part on the roster not working anymore.