I found the stock LR supplied tow bar etc too low at the back... the lower end of the drop plate acted like a rear mounted plough blade and got hung up on rock on some tracks. So I modified it somewhat (as I don't plan on towing regular trailers, a 50mm towball down low is not something I need)....
- wanted to fit a pintle hook at rear crossmember height for recoveries... and raise up the lowest point of the "plough blade" as much as possible.
- there is some talk on the forums that the TDCi (Puma) rear crossmember is not as suited to direct mounting of a pintle hook, as compared to older models with apparently stronger rear crossmembers. So...
- I raised the drop plate as high as I could and still retain the side braces back to chassis... for strength etc...
- trimmed the upper portion of the drop plate so I could still open my tailgate
- also fitted a plate behind the crossmember to spread load more
- then bolted the pintle hook through the drop plate (which is bolted to crossmember and braced back to chassis rails), through the cross member, and through the spreader plate behind the cross member.

End result:
mod towbar.jpg