First of all, Masterline's Jr. rope has a break strength of approximately 1,100 lbs. No B1, B2 or W6 skiers are going to break it. The number 1 W6 skier has an avg of 4 @32 off at 32mph and they are not pulling anywhere near 1,000 lbs.
Secondly, the skier's that are running any shoreline in W6 aren't going to choose the smaller rope because they will feel it to be a disadvantage because of the stretch.
The better and/or stronger skier is going to choose the larger 10mm rope. The lightweight longer line skiers are going to want the lighter rope.
20 years ago, everyone skied on ropes with a 1,200 lbs break strength. That includes Bob and Kris Lapoint etc. No need for rules, let the skiers decide. Open these divisions up to allow skiers to bring their own rope. Anything to encourage more, not less participation. Maybe it's only psychological, but if it's an approved brand that meets the specs, why not?
Background for Jr ropes:
Masterline developed the jr rope when my kids, the Baldwins and Neilly Ross started running the course at 5-6 years old. They all skied together, all were very small and we saw the difference immediately with all of the kids. For a 5 or 6 year old that weighs 35-40lbs and trying to run 20 mph, the standard slalom rope can be dangerous. It dips and catches the water as they round the buoy and then yanks them off the edge as they approach the 1st wake, putting the skier in a very bad position.
Anna is now running 32 off in practice at 32 mph and weighs about 75 lbs. She has been using an 8mm rope that is in between the Jr. Rope (5mm) and the 10mm standard slalom line. Just before Team Trials, she started skiing 34 mph. In her first set out at 34 she ran 28 off. Then we realized that she was on the smaller rope. It took her 6 sets to finally run 28 off after switching from the 8mm line to the standard. The first couple of sets she could run any pass. So it clearly makes a difference even at 28 and 32 for the smaller skiers.
The Jr. rope that we sell has a break strength of approximately 1,100 lbs. I don't know anyone that would "want" to use this rope that could break it. As the skier gets bigger, stronger and skis shorter line lengths, they will prefer an 8mm or 10mm rope. The skier running 32 or 35 off at 34mph is not going to prefer the Jr. rope. The idea for the rope is to help the lightweight skier from taking hard falls and progressing. I don't think that there has to be a cut off for B2. I don't think that there are any B2 skiers that can break it. The top skiers won't want to use it because it will feel to soft to them. The ones that are borderline can make that choice if it will help or hurt. I don't think it has to have a cut off for weight or ability. Anna won't use the Jr. rope that we sell because it feels too stretchy for her. I think that is the progression that you will find in reality. The beginner skier, skiing longer line lengths will prefer the smaller rope. The more advanced will want the standard 10 mm rope or something in between.
Any way, the point is that these ropes are strong enough that they won't break for these age divisions. If there was a skier that was large enough and had enough leverage, they would never choose this rope. They will have an advantage with the bigger, stiffer rope.
We should also do away with the shock tubes for the 1 and 2 divisions. They are useless for these divisions and just get in the way for the shorter, lightweight skiers.
Russell Gay
Masterline USA, Inc.
http://www.masterlineusa.com