This may be a little too random for this group but figured I'd try. Working on building a wiffle ball field in our backyard and trying to come up with best solution for an outfield fence that can be removed easily. Have spent the last two summers getting bermuda seeded and it's at least a playable surface now.

I can buy something that is made for this kind of application - would cost roughly $750 for about 150' of fencing.
https://practicesports.com/product/in-ground-fencing-kit-for-baseball-softball-2/?attribute_pa_size=50ft-6-sockets

Have seem some other DIY temporary garden fences that use 1/2" rebar in the ground with 1/2" PVC fitted on top and the plastic green garden fencing zip tied to it. Not a bad option overall. Main issue with it is that I'd ideally want to have some kind of sleeve in the ground with a plug that I could easily put PVC or other fence poles in. Don't really want to hammer in rebar each time I put it up.
This is the video I saw and got the idea from: https://www.motherdaughterprojects.com/blog/diy-temporary-pvc-fence-for-my-dog

Have seen some in ground sleeves for pool fencing that could work but I may need to get a small quantity and test it out before going full scale.

Anyone have any other ideas that could be a solution?

go the DIY route and use these for posts

https://www.amazon.com/FENSMILE-Fiberglass-Temporary-Protection-Fencing-20/dp/B0C27936QM/ref=sr_1_25?hvadid=590017317578&hvdev=c&hvlocphy=9027590&hvnetw=g&hvqmt=e&hvrand=6210515012283849933&hvtargid=kwd-4937498205&hydadcr=28691_14585396&keywords=temporary+fence+posts&qid=1689284329&sr=8-25&ufe=app_do%3Aamzn1.fos.006c50ae-5d4c-4777-9bc0-4513d670b6bc

Get a roll or two of this: BOEN 4 ft. x 100 ft. Green Construction Snow/Safety Barrier Fence SF-4101 - The Home Depot

And sink 1.5' sections of 1.25" PVC into the ground and put a coupler on top. flush with the ground surface. When you want to put up the fence, just put 4' 1.25" PVC pipes into each coupler, threaded through the fencing, and use an end cap to hold the fence up on the top of the pipe..