Did one that started to leak grease, 10yo since new, lubricated the disk pads very well!
Yeah the caliper retaining bolts were very difficult to remove but once out the rest was easy.
Did just the one and used about 2/3s of a cartridge of grease, pretty exy here at 100aud but better than doing bearings every year if its going to last again.
The cones and bearings looked to be in great shape so simply reused them. We've done bearings on our Seadoo trailer and each year they need replacing due to water ingress, while cheap and nasty it's the mess and time consumed I could do without. Will see if I've done the right process with the boatmate in a couple of months when the warmer weather comes around.

Cheers BruceR, Melb AUS