When I was ordained as a Reformed Baptist I made my exception to the confession known that I did not believe that mode was essential to baptism. This did not pose much of an issue for the church because, since I had no problem with immersion, I agreed that I would baptize using this mode since that was the baptistic position.
Now I'm a paedobaptist, it is all moot. I still maintain that sprinkling, pouring and immersion are all valid modes of baptism. It is the element that is important, not the mode.
If anyone is interested, I gave a lecture on this subject and it is available as a free download at
Christ Reformed Church - Audio Messages -