Where I pig hunt the FEEDERS are UNDER water in our swamp.
That's just part of the game, and you gotta deal with it.
You can't have just one stand...so hunt elsewhere if the water is too high.
On the other hand, I hunted in a place that was a large swamp created by a meteor crashing into the ground, throwing up a sand berm and this gigantic lake off a river occurred. The cypress trees grew huge there, and when the river rose it always flushed in new water, new fish, new and bigger gators and water mocassins too.
When we picked up the place, however, they'd been in a drought. The lake had trails crisscrossing it- we marked them, placed stands, and the water came up high- all we could see was the ribbons marking the trails under 3 feet of water.
The deer still used the same trails- bedded at the base of these cypress trees on the needle piles, high and dry.
If its only 8 inches, keep hunting it..it shouldn't matter to the deer.