probably not the most popular choice anymore, but I use hot melt glue, and have been with carbons for about 12 years. Easy to heat up the point and insert and turn it as needed.
I do as well,but it should be noted that you have to be very carefull with the heat and never in any situation do you apply direct heat to the carbon.
I use Easton hotmelt because it is a very low temp hotmelt and it spreads more evenly than most.
I also heat the glue stick,rub it on the end of the shaft.Then I place a fieldpoint(to hold on to) in my insert and heat the insert JUST ENOUGH to get the insert to slide through the glue.I also rotate the insert as I push it in.
This creates a superior bond,absent of voids and you still have the option of insert removal at a later date if necessary.