I don’t know why the “add a rail” poll choice has the “and a prayer” modifier, but I’d add a rail.
If you want to upgrade into a new stock/chassis which will incorporate a rail, all the better, but obviously that choice is more expensive. Know where is the balance point of your rifle so you know where you can set your rifle on the bag and short bipod, versus needing to hold down on the buttstock to prevent tipping, but otherwise, adaptability of an ARCA rail is all upside.
If you want to upgrade into a new stock/chassis which will incorporate a rail, all the better, but obviously that choice is more expensive. Know where is the balance point of your rifle so you know where you can set your rifle on the bag and short bipod, versus needing to hold down on the buttstock to prevent tipping, but otherwise, adaptability of an ARCA rail is all upside.