good points wooddust. I have no problem with the 25 gallon tank on my rubicons back rack. it is very stable. if I had a smaller atv I can see the problem. matter of fact on any hilly country that could cause a problem for a fellow. the fimco puts a 3.8 gpm pump on there boomless unit which puts out about 60 psi if I remember right. I am not familiar with the other boomless nozzle. what makes it so good? I may have to consider a replacement using it if I ever damage my nozzles that are currently on my unit.