Which method of protesting taxes was the most successful for colonists?

The most successful method of protesting taxes by the colonists was the organization of boycotts, particularly the non-importation agreements. By refusing to purchase British goods, colonists effectively pressured merchants and manufacturers in Britain, leading to economic strain. This collective action united the colonies and demonstrated their dissatisfaction with British taxation without representation. Ultimately, these boycotts contributed to the repeal of several unpopular taxes, such as the Stamp Act.