are you at the yacht club? I know it well!
this refers to the snowgoose elite 37,not the older snowgoose,where the rudders are transom hung.
the rudders have pintles on the bottom of the skegs that need removing first.
on the rudder
shafts in the aft water
tight compartments are clamp on lever arms each with 2 bolts these need loosening,the rudder will now drop down if you have sufficient clearance,you will need to chock the boat up high as they need to drop about 70 cm.
once you have the rudders out they need cutting all around on the join which follows the leading edge and trailing edge.
best tool to do this with is a disc grinder with a thin 3mm metal cutting disc.
separate the two halves,and remove damp foam core
you can then remove the stainless shafts with welded on tangs,and get them rebuilt or replaced,check for electrolysis
,if there is severe electrolysis
I recommend replacing with new,shaft is 1" 316 stainless,but 25mm should be okay if no1" stock available.
rebuilding you need to re glass in the stocks and tangs to one side of the rudder shell making sure they are central and vertical to the moulding.
once this is done join the 2 halves together using epoxy
glue and cloth along the join.
once this is done with a 30mm hole cutter
drill 2 holes in the bottom at each end.
this is where you will pour in expanding 2 part polyeurathane foam to form the new core
once this is done fill the holes with epoxy
,tape over,fair the rudder,paint with primer and anti foul,re install.
on the rudder bar linkage is an adjustment threaded bolt for fine tuning the rudders so they are both central.
if you need more info pm me cheers alex bond(La Residance ,Kaweni,grand terre)