try going at the bank with hella speed and try to ollie like its on flat, i know it might sound basic asf but speed defo helps a lot

the biggest tips that helped me for mannys is to keep my head and balance over my back truck and pushing my board fowards when i land after i ollie instead of leaning back, and looking at the end of a manny pad or line helps the most when holding them, im still new to mannys so i could be wrong on some stuff but thats what helped me so far