If you want to designate a donation towards a particular participant, they get the credit towards the cost of their trip, but your donation is not tax deductible.
The best way to do that is to write a check to “LakeHaven” with “Mission Trip and their name” in the memo, and then handing it TO THEM to turn in.
You can also mail checks to
P.O. Box 840,
Eustis FL 32727