Hi Glynn,
You might have guessed - both have been own-builds 
John
So then John you have not used a truckmount have you ?
what spec did your homebuild have, was it a 3.2. 4.0.4.5.4.7 or a 5.6 blower ?
what did you drive it with ? the latter 4 of them would require a 23hp engine at the least. A 240v household supply would not do it.
I, personally would compare 3x7.2in lambs with about , the smallest 3.2 blower running at quarter speed at best and at 150ft.
Glynn