SEAFLO Pontoon Storage Blocks | 4-Pack Heavy-Duty Blocks for Pontoon Boat Support and Storage | Durable, Easy Stack, Weather-Resistant Design with Non-Slip Surface for Easy Maintenance and Stability

These are very solid and sturdy blocks. Using on a pontoon and works well and provides great support so the pontoons aren’t sitting on the ground.

I can confirm that these four storage blocks, while expensive, are very sturdy, well made and easily support my 22 foot pontoon boat. They stack for convenient storage and are going to last a long time. As mentioned in other reviews, these come with holes drilled in the edges of the base for attaching 2" x 4's" or 4" x 4's" if you want them to hold your pontoon boat higher off the ground. I did not need this extra height but someone else might appreciate this option.

So they're short on the height you'll need, but good and solid. I had to use 4x4s under them.

Price was very good for a good quality product.

These are very solid. I wish they were a little taller so I could store my boat with the motor vertical. I had to put some blocks under these to get the boat to sit higher.

These were obviously very easy to use, just set them in place and lower your boat onto them. The great thing is they are fairly lightweight, much more so than 6" x 6" wooden blocks, and nest for stacking, and that will save me space during the boating season when they will be stored in my already quite full garage space.

They are lightweight and easy to move around yet strong enough to hold the pontoon off the ground.

Bought two sets for storing our pontoon. Works well.