A pricey solution to the stake pocket/chain problem is here-
Ancra Porta Anchor Outward Offset, Model# 49716-10 | Hand Winches | Northern Tool + Equipment
They also have these-
Ancra Porta Winch Outward Offset, Model# 49716-10 | Hand Winches | Northern Tool + Equipment
Oddly the two links above look the same but go to two different products
Ancra Porta Anchor Outward Offset, Model# 49716-10 | Hand Winches | Northern Tool + Equipment
They also have these-
Ancra Porta Winch Outward Offset, Model# 49716-10 | Hand Winches | Northern Tool + Equipment
Oddly the two links above look the same but go to two different products