I'm gonna drop a link for a skimpro they do come with a metal rod you can attach in the side or just drop in the center for a weight.

https://www.amazon.com/SkimPro-Tower-Vented-Skimmer-Basket-Handle/dp/B00GSXSII4/ref=asc_df_B00GSXSII4/?tag=hyprod-20&linkCode=df0&hvadid=167163693584&hvpos=&hvnetw=g&hvrand=4850585053842962264&hvpone=&hvptwo=&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=9027286&hvtargid=pla-313858980889&psc=1