Bought a Seago 290R (air floor, inflatable keel) last year together with a Suzuki DF5 outboard. We've only managed to use it once so far (too much time on the RIB
) but based on that one trip I'm wondering if I'm over-expecting from it.
The book of words with the boat (subsequently confirmed by email from Seago) says all chambers should be inflated to 2.5psi, which we did. This seems fine for the tubes but from reading around seems low to very low for the air floor and inflable keel (some guy on here recently is talking about inflating his floor to 12psi).
This months MBM has a group test of 14 SIBs in the 2.5/2.6m range - none of them Seago
- across a very wide price range (£350 to £1350)
The words of wisdom from the test is that the performance of a SIB most probably is a function of the hull design...flat floor: poor planing, doesn't turn well, but light and small when packed; slatted floor: slightly better planing, still poor in turns; air floor with inflatable keel/V bottom: planes easiest, good in turns but heavier/bulkier.
When it comes to performance absolutely flat out two up with our Seago 290 we saw 8mph best and not a chance of planing. The best performer of the MBM group did 15mph two up on the same 5hp we have. Some of the test boats managed 6mph on 2.5hp.
Any views/thoughts/comments from owners of similarly sized and powered SIBs?