Hi Peter,
Yes I removed & replaced mine rubber strake just recently, with the boat in the water. The original adhesive had failed, and several times I have had to recover it , being held on only by the four screws holding the metal "U" piece at the bottom.
After cleaning the inside surfaces with a xylene based product, I refixed it using the marine grade sikaflex.
I used seven (7x) 310ml tubes of sikaflex 291, but wished I have another tube or two at the time.
You will need assistance with the replacement, as it can be quite awkward re-installing the rubber whilst it is filled with the sealant, whilst minimising the mess.
Steven
SV Konan the Bavarian