The hooked in sex position is a hot, interlocked, skin-on-skin anal sex position. To nail this intimate position, total body alignment is required, but finding a correct and complementary placement of both playmate's knees is totally achievable. If the giving partner places their legs inside of those of their partner in front of them, they can then adjust the width and subsequent height of the spread, as required, while the "hook-in" action assists in drawing their playmate back onto them.
The receiving partner can up their pleasure quotient with the addition of a toy, like the KIIROO Keon stroker.