It may be best to forgo scouting around the pond. With pond beaver, it is entirely possible those beaver will learn your scent, and stay away from anything you do. I have had situations were I had to enter the water, and walk 50 yards in the water carrying my equipment to avoid leaving scent on the ground. Then make the set while standing the water, never touching the bank.
If you get these beaver stirred up, you may never catch them. In some cases, shooting the beaver is the best option.
A beaver in an isolated pond can be one of the hardest animals on earth to catch.
Endeavor to persevere.