You can find surrender tables for any set of rules here on the site (basic strategy engine).
This is a big advantage, as far as I can recall - never played it - can't say I have any numbers.
Just use the tables - it doesn't matter if you have a 2-card 16 or a 5-card one (unless 5-card charlie is in effect

- surrender rules are the same. Surrender is a great rule for the house as most ploppies who actually use it surrender much too often.
In case you're on a smartphone -
S17
Surrender 16 vs 9,10,A
Surrender 15 vs 10
H17
Surrender 17 vs A
Surrender 16 vs 9,10,A
Surrender 15 vs 10, A
PM me if you have more questions.
D.