Not optimal with multiple jumpers at the same time. The round also get lower bounces. The rectangular ones will bounce the highest bit aren’t as wide. We have had a 15 or 16 foot octoganal tramp for over 20 years and it was always the one the kids migrated to. At that time, when Walmart ones were going for $300, I think we paid $800. Ive seen them since for $13-1500. We have replaced the springs and mat one time and it is still going great. We got it out of north Ogden area from a place that manufactured them. I don’t know if that same company is still around. I highly encourage jumping on a octagonal one before buying