If you use the 4x4's, tack on those HDPE plastic glides on them. That will make it a lot easier to slide them. Teflon is very similar to HDPE but it has less abrasion resistance.

https://www.boatoutfitters.com/trailer-bunk-slides


www.hoosierpondpros.com


http://www.pondboss.com/subscribe.asp?c=4
3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).