Always happy to share my experience with the members of this forum
Does your husband have any troweling experience?
Regardless, you'll want a wood float and a pool trowel (the pool trowel is oval rather than rectangular). Use a garden rake to move the sand to 'roughly' level and at the desired height (if you don't have a transit, you can just run a string across the the pool and measure down from that to find the desired grade). Wet the sand with a garden hose ('mist' and 'shower' settings work best), you want the sand moist but not soaking. Use the wood float to first smooth and then tamp the sand and the trowel to put the finishing smooth on the sand. Work from the walls into the pool and leave an aisle back to the ladder (i.e. don't trowel yourself into a 'corner' with no way out of the pool)
To get the bevel at the bottom of the wall right, I've both measure down from the top of the wall and made a magic marker line on my wood float. I like the marking of the float because that way I can sink the float down to the bottom of the wall, to check how high the sand is on the wall and then, put the float against the wall and sight down to see how far out from the wall I am and adjust accordingly. (I like to play it safe and, if the liner calls for a 6" bevel, I mark the float at ~ 5 1/2" -it's better to be a little low on the floor of a liner pool).
There's the first installment on the tips & tricks. If you need clarification on anything or want a little more, just let me know.
[edit] The previous 2 posts weren't there when I started my response - I'm a poor and S-L-O-W typist.
You got the right sand 8) [/edit]
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