Speedo or GPS

[MeMe]

I've just bought a Medline 1 480 with a Yam 70 on the tail. Unfortunately the instrumentation is somewhat lacking compared to my prevous Yachtline II 420 DL. The Med has a dual digital trim gauge and rev counter but no speedo. Should I, 1. Buy a speedo for £60.00 and utilise the Yam's built in transducer or 2. Buy a plotting GPS for £250 ish plus labour and use that as a speedo even though I'm only a costal day cruiser ? What are the pros / cons.

Further, when utilising the rev counter attached to the Yam 70 2 Stroke, what are the rev limits ?

[Charles]

Originally posted by MeMe
Should I, 1. Buy a speedo for £60.00 and utilise the Yam's built in transducer or 2. Buy a plotting GPS for £250 ish plus labour and use that as a speedo even though I'm only a costal day cruiser ? What are the pros / cons.

Further, when utilising the rev counter attached to the Yam 70 2 Stroke, what are the rev limits ?

My personal opinion is buy a GPS - far more accurate plus you can find out where you are etc - you should know anyway, but its an aid. The transducer speedo is pretty unreliable much above 18knts.