Yeah I agree the heaver point weight is the way to go. I use weight tubes now, but they go the full length of my shaft. I Use them mostly to get my arrow to the 10gr per pound set up.
"I have used the tubes for the front half of the arrow. You need to crimp the tube about every inch and a half and force them in the arrow shaft to make them stay put. I have used weed wacker line, decoy line(tanglefree) and poly rope. I will say this, by the time you get done messing around you will be better off going with a stiffer shaft and bumping your tip weight up.IMHO"
What you say makes sense..sometime its just isn't worth it. Thanks