BETH DIN OF AMERICA
The best tool to prevent get refusal thus far
One of the best tools to prevent get refusal is the use of the Beth Din of America's prenuptial/arbitration agreement. Signed before the wedding takes place, it helps to ensure that the get will not be used as a bargaining chip to receive concessions, usually from the wife.
Because California has very specific rules about prenuptial agreements, there is a special version of the prenuptial agreement specifically for California residents. The form must be signed by the bride, groom, and at least two witnesses, in the presence of a notary. For full instructions and the form itself, please go to the Beth Din of America website.
A full explanation of the prenuptial agreement and its halakhic basis can be found on the Beth Din of America's website, theprenup.org. Because of its effectiveness, this method of agunah prevention has been endorsed widely. See the full list of endorsements here.