One thing I brought with me to RVing is knowing a thing or two about blocking heavy things that don't lend themselves to blocking very well.
I have a 17,000# boat that I transfer from trailer to blocks then back again every year. Many years. Never lost it.
Especially if doing this for the first time, always have a backup in case it slips. Not likely. Dealing with a trailer & its flat frame surfaces is a whole lot easier than a curvacious boat hull.
Nothing to be affraid of. Much can be done with a 10 or 12 ton bottle jack, some big blocks of wood, some smaller blocks & other odds & ends for when you only need a wedge. The trick is to take the weight at a strong point of the frame. Wedge a piece of 2X4 under the pinbox & spread its weight with a board on the ground. Thats what we do when we have shipping containers of something heavy & don't want them tipping forward as they are unloaded & the weight is forward of the landing legs.
Simple stuff not thought of if not done before.
Make sure that those rear stabilizers are off the ground. No need to be picking the whole thing up when it can pivot at the axles.
Have fun. One step at a time.
Be happy you are not lifting this with less than 2" flat on the keel & it is on an angle.
