We used a similar method but it had it's problems. We used six steel barrels, on a trailer. we strapped them down with the open end up. This did create a huge amount of sloshing going over un-even terrain. We ended up putting a large piece of fabric/filter over all six tanks and using a bungie to hold it down, this limited the loss of sap to sloshing, and kept out some of the nasties. Also we had to bail out the sap with buckets, a pump or a drain would be a great addition. If you are in the market for a poly tank, you might check a local rental outlet, sometimes they replace their stock from time to time and they sell off their older items. That is where we hope to get our tanks this season.
2024 - 57 Gallons - Short season, many and varied problems remedied in short order! - No buckets!
2023 - 38 Gallons - RO broke, Buckets didn't run, rebuilt vacuum pump mid-season, still made good syrup!
2022 - 52 Gallons - DIY RO, 50% less fuel, no late nights in the shack!
2021 - 48 Gallons - new pans, new arch, lots of new taps and tubing
2020 - 32 Gallons
2019 - 27 Gallons