jsheesley wrote:
Do you guys have any advice, tips or tricks for laying up fiberglass overhead?

Use a garbage bag full of air to press up under areas to hold the
glass and goo in place till it sets up. It ain't vacuum bagging, but
it can help in some situations. You can block up a support, or just
blow it up with a vacuum cleaner, depending on the space available.

For a large splat, maybe you could use a weather balloon and fill it
up with a furnace fan, or start at one end and go section by
section, overlapping while still green.

You can lay out an overhead patch on the deflated bag, and lift it
into place with air pressure.

Terry K