Shaft Anodes

[GBNI]

Time to fit new zinc shaft anodes and I notice a large variation in prices.
Is there any advantage to having 2 anodes per shaft over just one heavier one on each shaft?

 

[Fleming]

There's no danger of overprotecting your shaft and prop with an extra anode.

 

[GBNI]

 

[Greg QS]

I buy from boatzins.com. They have standard weight and xh extra heavy. I cannot get through the season with the standard weight. The xh does. 2 standard are more money than a single xh one. From them anyway. Feel I have gotten the best pricing from them for all my zinks.