Here's an easy and cheap way to dry out waterlogged flotation foam in a Sunfish or Minifish sailboat.
For this project I used a couple "muffin fans" such as this one from Amazon:
https://www.amazon.com/AC-Infinity-Cooling-Ventilation-Projects/dp/B009OWVUJ0/ref=sr_1_4?ie=UTF8&qid=1534717954&sr=8-4&keywords=computer+fan